Flat Roof Repair Services: 4 Solutions Roofers Can Offer To Fix Broken Insulation

Posted on: 18 July 2023

Flat roofs are ideal for businesses and homeowners looking to maximize their space without sacrificing structural integrity. Unfortunately, flat roofs can develop problems with insulation due to water leaks, material breakdowns, or extreme weather conditions.

It can be challenging to fix flat roof insulation, as it requires specialized tools and know-how. This guide explores four solutions roofers can offer to fix broken insulation on flat roofs.

Heat Welding

Heat welding involves using a hot air gun to melt and bond two sheets of roofing material together. This is an ideal solution for repairing large cracks in flat roofs, as the heat welding process helps form a waterproof seal that won't easily give way.

When the heat welding process is complete, roofers can apply a sealant over the repair to provide additional protection. If done correctly, heat welding can offer a long-term solution to fix broken insulation on flat roofs.

Spray Foam Insulation

For smaller cracks and holes in flat roofs, spray foam insulation can be a great solution. This type of insulation expands upon application and helps provide airtight seals around gaps or seams. Additionally, this method can help increase the energy efficiency of your roof by preventing air leaks and keeping temperatures consistent.

Most roofers apply multiple layers of spray foam insulation for best results, as this can create an even stronger seal around the crack or hole.

Peel-and-Stick Membranes

Peel-and-stick membranes solution involves placing a rubber or vinyl membrane over the repair site and then peeling back layers until it sticks. The peel-and-stick membrane helps form an airtight seal around the repair, which prevents further damage.

These membranes are durable and flexible, so they can conform to the shape of your roof. As an added benefit, peel-and-stick membranes are much easier to install than traditional insulation materials.


When dealing with extreme damage to flat roof insulation, splicing could be a viable option. It involves cutting out damaged pieces of material and replacing them with new ones. After the new pieces are cut and fit correctly, they're sewn together with heavy-duty thread for additional stability.

Splicing is labor-intensive and costly, so it's usually used as a last resort when repairing flat roof insulation. However, if done correctly, it can help keep the strength of your flat roof.

No matter what type of problem you're facing with your flat roof, having a qualified roofer assess the situation can help you determine the best solution. Schedule an appointment today to get a professional opinion and determine the best way to fix your broken insulation.

To learn more about flat roof repair, contact a professional near you.