Roof Overlay Systems

Overlaying means applying a new waterproofing membrane over the old roof covering.

The advantages of using this method:

  • Save the cost of stripping the old roof.
  • Saves the environment as no materials dumped in land fill.
  • Less invasive so we can finish quicker, less chance of weather changing whilst undertaking the work.

Get in touch with us and we will respond promptly to book a suitable time and day to come and visit your property.

Frequently Asked Questions Regarding Roof Overlay Systems

Can I overlay and insulate to the new Building Regulations?
Yes, if the roof is sound enough to overlay, then it should be OK to insulate to the new Building Regulation.

Can every roof be overlaid?
Around 85% of roofs can be overlaid.

How do I know if I can overlay my roof?
If the old roof looks good, flat and sound then it can probably be overlaid. If the roof is sagging, spongy to walk on, up and down ‘all over the place’, then probably not.

Why Choose Us?

  • Over 30 Years Experience
  • Excellent Customer Service
  • Insurance Backed Guarantees
  • We Get it Done on Time
  • Flexible Systems & Pricing
  • Rated 5 out of 5 by Our Customers

Roofs That Can Not Be Overlayed

In this video our Principal Estimator – Steven Dickinson walks through a type of flat roof that can not be overlaid.

This Flat Roof Can Not Be Overlaid

In this video our Principal Estimator – Steven Dickinson walks you through another type of flat roof that can not be overlaid.

Case Study of Roof Overlay System

This is a Mosque in East London, the original flat roof was a asphalt roof covered with ceramic tiles, over the years it had leaked.

Roof Overlay Systems

A major overhaul was undertaken and a new felt roof was fitted over the top on a timber frame. After this didn’t solve the leaks the owners decided to seek a more long-term solution. They contacted London Flat Roofing and we surveyed the roof supplied a report and set out several options of how to solve the problem.

One of the solutions we put forwards was the overlaying of the roof using the Gacoroof roofing system. Like normal cost is a big factor and the cost of overlaying a roof is significantly cheaper than the complete renewal.

GacoRoof - Roof Overlay System

It was agreed with the owners of the Mosque that they would strip the roof and deal with the removal of all the rubbish.

Roof Overlay Systems

London Flat roofing would then attend the property and carry out the application of the Gacoroof roofing system. As an overlay system the Gacoroof roofing system is a perfect example of an overlay system.

Different areas of the roof were prepared for us and given over, we applied the overlay system and completed the roof in sections completing the works within two weeks. The owners of the Mosque now have a roof that will last for probably over 40 years with little or no maintenance at a price that they could afford.

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Does your flat roof need to be repaired, replaced or improved?