Bauder, Sarnafil & Other Commercial Flat Roof Membrane Repairs Scotland
Single ply membrane, felt roof and liquid roofing systems, including Bauder, IKO and other manufacturers roof repairs for commercial and industrial buildings across Scotland.
Survey-led from the outset. Over almost 20 years, Modern Roofing has installed and repaired a very wide range of commercial single ply roofing systems, from Bauder and Protan to many of the other major and smaller membrane manufacturers used throughout the industry. This page demonstrates that wider product experience, because working across different membrane systems gives us a stronger understanding of how they perform, how defects develop and which repair or refurbishment methods are most likely to be compatible and effective. After using and assessing different systems over many years, we chose to partner with Sika because we believe its product range, technical support, detailing and long-term project support best match the standards we want to provide for our clients.
That wider experience remains important. We continue to inspect, repair and advise on commercial and industrial flat roofs across Scotland, including Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal, Elevate and other single ply, felt, liquid, EPDM and flat roof waterproofing systems. The manufacturer name matters, but the roof condition, build-up, compatibility and detailing must be properly understood before any repair or refurbishment is recommended.
Support for commercial flat roof systems:
Includes Bauder single ply membranes, Icopal single ply membrane, and many other manufacturers' membranes, felt and liquid systems.
- Single ply membrane roof advice and leak investigation
- Felt roof and reinforced bitumen membrane support
- Liquid applied roof detailing and refurbishment advice
- Bauder roof repairs, Bauder Thermofol and Thermoplan review
- Bauder felt roof and Bauder LiquiTEC liquid roofing advice
- Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal and Elevate roof review
- Roof surveys, core samples and roof condition reporting
- Overlay, refurbishment or replacement advice
Commercial Flat Roof Membrane Advice Without the Sales Pitch
Commercial flat roofs are often inherited rather than chosen. A building owner may have a Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal, Elevate or mixed roof system without fully knowing what has been installed, what condition it is in, whether it is still under guarantee or whether the correct repair method is being used.
Modern Roofing can inspect commercial flat roofs where single ply membranes, reinforced bitumen felt, cold applied liquid systems or similar waterproofing systems are present. Where a Bauder, Icopal or other system is involved, the same survey-led approach applies. Whether it is Sarnafil, Bauder or another commercial membrane system, the aim is the same: establish what has been installed, identify the roof build-up, find the source of any leak or defect and give practical advice on repair, refurbishment, overlay or replacement.
Where an active manufacturer guarantee or formal sign-off is involved, the correct manufacturer requirements should be checked before intrusive works are carried out. We can help clients understand that route while dealing with the roofing condition, detailing and waterproofing issues on site.
Bauder Roof Refurbishment – Aldi, Renfrew
Before
After
Aldi, Renfrew — Bauder roof refurbishment completed in 2014. Modern Roofing supplied labour-only Bauder-trained installers for the Bauder roofing works. The existing felt roof was stripped before a new Bauder felt VCL, Bauder insulation and Bauder single-ply membrane system were installed.
Single ply, felt and liquid roof support in Scotland
Modern Roofing can provide independent roof survey support, leak investigation, roof condition reporting and practical repair or refurbishment advice for single ply membrane roofs, felt roofs and liquid applied systems. That can include Bauder roof repairs in Scotland, as well as Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal, Elevate and other commercial flat roof systems.
Commercial Flat Roof Systems We Can Help Clients Understand
Different commercial flat roof systems need different repair and refurbishment thinking. That applies across Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal, Elevate and other roof systems. A detail that is suitable for a bituminous felt roof may not be suitable for a single ply membrane, and a liquid-applied repair should not be used blindly without understanding the existing roof build-up and manufacturer requirements.
PVC single ply membrane review
PVC single ply systems including Bauder Thermofol, Sarnafil, Sikaplan, IKO, RENOLIT and ProtanOn existing roofs, checks may include laps, penetrations, upstands, outlets, mechanical damage, surface condition and compatibility of any repair method.
FPO single ply membrane review
FPO/TPO membrane systems including Bauder Thermoplan and ElevateBauder Thermoplan is an FPO single ply membrane system. FPO and PVC membranes are different materials, so identification matters before patching, welding or detailing works are planned.
Reinforced bitumen membrane review
Bauder, IKO and BMI Icopal felt roof refurbishmentReinforced bitumen membrane systems include felt roof build-ups. These roofs need proper assessment before overlay or local repair.
Cold applied liquid roof review
Bauder LiquiTEC, Decothane liquid systems and liquid-applied roof detailingCold applied liquid waterproofing systems are often useful around complicated detailing, but the roof condition and compatibility still need considered.
Overlay or replacement?
Some roofs can be overlaid if they are sound and dry. Others need saturated insulation removed, failed details stripped or the roof fully replaced.
Other commercial roof membranes
Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal & ElevateCommercial roofs may also include Sarnafil or Sikaplan, IKO Armourplan or Spectraplan, RENOLIT ALKORPLAN, Protan PVC, Danosa DANOPOL, BMI Icopal single ply or Elevate EPDM/TPO systems.
Important
Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal and Elevate are manufacturer trade names. This page is written for building owners and facilities teams who need practical roofing advice where a commercial flat roof system may be present. Modern Roofing does not pretend every roof needs the same product or the same repair.
Membrane name on the roof is only part of the story
A roof may be described as Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal or Elevate, but the real issue is whether the roof build-up, detailing, drainage, insulation and repair history are still performing properly.
Flat Roof Surveys, Leak Investigation and Condition Reports
Before recommending repairs, overlay or replacement, the roof should be understood properly. A commercial flat roof can contain several layers, trapped moisture, old repairs, blocked outlets, poor detailing and defects that are not obvious from one walkover.
Identify the roof type
We look at whether the roof appears to be single ply, reinforced bitumen membrane, liquid applied waterproofing or a mixed/overlaid system.
Find defect patterns
We check laps, details, penetrations, outlets, upstands, gutters, rooflights, ponding water and obvious mechanical damage.
Check the build-up
Where required, controlled core samples or opening-up can help confirm the roof build-up, insulation condition and whether moisture is trapped.
Give practical options
The report can explain whether local repair, liquid detailing, overlay, partial strip or full replacement is the sensible route.
Survey-led flat roof repair advice
For larger commercial roofs, guessing is expensive. A survey-led approach helps decide whether you are dealing with a simple repair, a local detailing issue, saturated insulation, an incompatible old repair or a roof that is reaching the end of its practical service life.
Single Ply Membrane Surveys and Refurbishment Advice
Modern Roofing can carry out detailed, survey-led assessments similar to the investigation completed at Lady Lawson Street. These surveys can be undertaken on existing Icopal, Bauder and other commercial membrane roofing systems where the roof condition, insulation type, moisture status or most suitable refurbishment route needs to be properly understood.
The survey can include visual inspection, controlled core samples, confirmation of the roof build-up, identification of PIR, EPS or other insulation types, moisture findings and a review of laps, upstands, outlets, penetrations and previous repairs. The purpose is to establish what is still performing, what needs upgraded and whether repair, overlay, partial strip-out or full replacement is the most sensible approach.
At Lady Lawson Street, the core samples showed that the existing Icopal Sure-Weld roof build-ups remained dry. This allowed the refurbishment decisions to be based on thermal performance and fire performance rather than assumed membrane failure. The PIR roof areas could be overlaid to improve insulation value, while the smaller EPS balcony areas required strip-out because of the insulation's poor fire performance.
Survey support for Icopal, Bauder and other commercial membrane systems- Icopal, Bauder and other membrane roof condition surveys
- Controlled core samples and roof build-up identification
- Moisture checks and confirmation of dry or affected insulation
- Assessment of PIR, EPS and other insulation types
- Repair, overlay, partial strip-out or replacement advice
- Photographic reporting with clear practical recommendations
Icopal Sure-Weld Roofing Experience — Lady Lawson Street, Edinburgh, 2007
Modern Roofing carried out roofing works using an Icopal Sure-Weld single-ply membrane system at the Lady Lawson Street student accommodation in Edinburgh in 2007.
After almost two decades of service, recent core samples confirmed that the existing roof build-ups remained dry. This showed that the Icopal Sure-Weld waterproofing had continued to protect the insulation beneath.
On the seventh-floor roof areas where PIR insulation is present, the existing roof is being overlaid. The PIR remained dry and serviceable, but its thermal performance is below current Section 6 guidance, so the overlay is being carried out to improve insulation value and overall energy efficiency rather than because of membrane failure.
On the smaller balcony roof areas where EPS insulation is present, the roof build-up is being stripped and replaced even though the core samples were dry. This is because EPS has poor fire performance, and some insurers or project requirements may call for a non-combustible insulation as part of the refurbishment.
Felt roof and reinforced bitumen membrane refurbishment detail.
Felt Roof Repairs and Bituminous Membrane Refurbishment
Bauder reinforced bitumen membrane systems are used on many commercial flat roofs, alongside other felt and bituminous systems from manufacturers such as IKO, BMI Icopal and others. These roofs can often be repaired or refurbished, but the condition of the existing waterproofing, insulation and deck needs to be understood first.
Bauder felt, IKO felt, BMI Icopal and reinforced bitumen membrane refurbishmentOn older felt roofs, common issues include split details, open laps, blistering, ponding water, blocked outlets, tired mineral finish, saturated insulation and poor previous repairs. In some cases, a local repair is enough. In others, overlay or replacement is more sensible.
Liquid Roofing, Detail Repairs and Liquid-Applied Waterproofing Advice
Liquid-applied waterproofing can be very useful around complicated details, penetrations, plant bases, outlets and awkward roof areas. Bauder LiquiTEC is one example of a liquid-applied roof system used in commercial flat roofing, while Decothane and other liquid-applied membrane systems can also be considered used in roofing and waterproofing applications.
Bauder LiquiTEC, Decothane liquid applied membrane systems and commercial liquid roof detailingDetail-heavy roof areas
Liquid-applied systems can be considered around awkward details where sheet membrane or felt detailing is difficult, subject to preparation and compatibility.
Existing roof compatibility
The existing roof surface needs assessed before liquid repair or overlay works are chosen. Preparation, adhesion and moisture condition matter.
Repair or wider system?
A liquid patch may solve a local detail issue, but repeated failures may point to wider roof ageing, trapped moisture or a poorly performing existing build-up.
Do not just paint over the problem
Liquid roofing is useful when it is specified and installed for the right reason. It should not be used to hide trapped moisture, failing insulation or a roof that needs more substantial refurbishment.
Repair, Overlay or Replace? The Right Route for a Commercial Flat Roof
The best answer depends on the roof. Some Bauder, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal, Elevate and similar flat roofs only need localised repair. Others need liquid detailing, gutter works, improved drainage, partial replacement, overlay or a full warm roof refurbishment.
| Roof condition | Possible approach | What needs checked first |
|---|---|---|
| Local puncture or isolated damage | Targeted membrane or felt repair | Membrane type, compatibility and surrounding condition |
| Leaks around outlets, upstands or penetrations | Detail repair, liquid detailing or local strip and renewal | Water path, adhesion, substrate and previous repairs |
| Old but mostly dry roof | Overlay or refurbishment may be considered | Moisture condition, insulation, falls and compatibility |
| Saturated insulation or widespread failure | Partial or full replacement likely to be more sensible | Core samples, moisture risk, deck condition and budget |
Need a Bauder, Protan or Similar Roof Looked At?
Send photographs, roof age, any guarantee documents and a short description of the leak or issue. Modern Roofing can advise on the next step and arrange a roof survey where required, whether the roof is Bauder, Protan, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Danosa, BMI Icopal, Elevate or another commercial membrane system.
Why Modern Roofing for Commercial Flat Roof Advice?
- ✓Independent, survey-led advice for commercial and industrial flat roofs
- ✓Practical experience with Bauder, Sarnafil, Sikaplan, Decothane and wider single ply, felt, liquid, gutters and roof detailing
- ✓Honest repair, overlay or replacement recommendations
- ✓Roof condition reports, photographs and clear explanation of defect patterns
- ✓We chose to partner with Sika because it best suits our preferred specification, detailing and client support route
- ✓Lanarkshire based contractor working across Scotland
Survey-Led
A leaking commercial roof needs a proper diagnosis before anyone starts selling a new system. Our approach is to inspect the roof, understand the build-up and then explain the most practical route forward.
Commercial Flat Roof Membrane Repairs Across Scotland
Modern Roofing is based in Lanarkshire and supports commercial and industrial roofing clients across Scotland. We can assist with single ply membrane roof surveys, felt roof refurbishment advice, liquid roofing support and wider flat roof condition reporting, including Bauder roof repairs and roofs where Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Protan, Danosa, BMI Icopal or Elevate systems are present.
- Sarnafil, Protan and Bauder roof repairs Glasgow
- Sikaplan and RENOLIT roof repairs Edinburgh
- IKO and BMI Icopal roof surveys Lanarkshire
- Danosa and Elevate single ply membrane repairs Central Belt
- Felt roof refurbishment and Decothane liquid roof detailing Scotland
- Commercial flat roof repair and refurbishment across Scotland
Sarnafil Roofing Experience — Ming's Restaurant, Cumbernauld
In 2007, Modern Roofing supplied labour-only installers for the Sarnafil single-ply membrane and decor profile roofing works at Ming's Restaurant in Cumbernauld. The Sarnafil roof remains in service and is still going strong today, demonstrating the long-term performance of the original installation.
Related Modern Roofing services
This service connects with industrial roof surveys, industrial roof repairs, Sarnafil and Sikaplan single ply membranes, roof integrity testing, industrial gutter lining and wider Industrial Roofing Scotland support.
For new commercial single ply roofing specifications, Modern Roofing generally recommends Sika as our preferred manufacturer partner, while still being able to inspect and advise on Bauder, Protan, Sarnafil, Sikaplan, RENOLIT, IKO, Danosa, BMI Icopal, Elevate and other existing roof systems.
Commercial Flat Roof Membrane FAQs
Can Modern Roofing repair Bauder, Protan and other commercial membrane roofs?
Modern Roofing can inspect and support repairs on commercial flat roofs where Bauder, Protan, Sarnafil, Sikaplan, RENOLIT, IKO, Danosa, BMI Icopal, Elevate or similar systems are present, suspected or being considered. If a manufacturer guarantee is active, the correct guarantee and manufacturer requirements should be checked before intrusive work is carried out.
Do you work with single ply membrane roofs?
Yes. We can review commercial single ply membrane roofs, including Bauder Thermofol PVC, Bauder Thermoplan FPO, Protan, Sarnafil, Sikaplan, RENOLIT ALKORPLAN, IKO and Danosa systems. The membrane type should be identified before repair or detailing works are chosen.
Do you repair felt and reinforced bitumen membrane roofs?
Yes. We can advise on Bauder felt roof repairs, IKO felt systems, BMI Icopal systems, reinforced bitumen membrane defects, local patch repairs, overlay options and wider refurbishment routes for commercial flat roofs.
Can you help with liquid roof details?
Yes. We can advise on liquid-applied waterproofing details, including Bauder LiquiTEC, Decothane-style liquid detailing, compatibility, surface condition, preparation and whether a liquid repair is sensible for the roof defect being considered.
What if my roof is still under a manufacturer guarantee?
If a Bauder, Protan, Sarnafil, Sikaplan, RENOLIT, IKO, Danosa, BMI Icopal, Elevate or other manufacturer guarantee is active, the guarantee terms and manufacturer requirements should be checked before intrusive works, non-approved repairs or overlay works are carried out.
Can an existing flat roof membrane be overlaid?
Sometimes, but only if the existing roof is suitable. Bauder, Protan, Sarnafil, Sikaplan, felt, liquid and other membrane roofs should be assessed for moisture, adhesion, insulation condition, deck condition, falls, compatibility and existing defects before overlay is recommended.
How do you find leaks on a commercial flat roof?
Leak investigation may include visual inspection, checking laps and details, outlets, gutters, upstands, penetrations, core samples, moisture checks and roof integrity testing where appropriate. This applies whether the roof is Bauder, Protan, Sarnafil, Sikaplan, felt, liquid or another commercial waterproofing system.
Do you recommend a preferred manufacturer?
Yes. For new commercial single ply roofing specifications, Modern Roofing generally recommends Sika as our preferred manufacturer partner. We feel this route suits our standards for specification, detailing, technical support, installation quality, warranty route and long-term aftercare. We still inspect and advise on existing Bauder, Protan, Sarnafil, Sikaplan, Decothane, IKO, RENOLIT, Danosa, BMI Icopal, Elevate, felt, liquid, metal and other commercial waterproofing systems where they are already installed.
What areas do you cover?
Modern Roofing supports commercial flat roof membrane repairs, Bauder roof repairs, Protan roof repairs, Sarnafil and Sikaplan roof reviews, roof surveys and commercial flat roof refurbishment advice across Scotland, including Glasgow, Edinburgh, Lanarkshire and the Central Belt.
