Asbestos Encapsulation Spray Foam Applications

Asbestos, now banned in modern construction, is commonly found in the roofing sheets of older buildings. Poorly maintained and degrading roofs can become problematic when extremely harmful airborne dust fibres are inhaled or ingested leading to respiratory problems or even Cancer.

Removing and disposing of asbestos is a specialist job and can be incredibly expensive. If you have an asbestos roof that is in good condition you can prevent its deterioration by using spray foam insulation to encapsulate and extend its lifespan.

With seamless adhesion to every inch of the roof, spray foam encapsulation provides an air and watertight seal protecting your roof against long-term degradation. As a preventative measure, encapsulation is a fast, effective and inexpensive solution compared to the alternative.

We recommend an application of 30mm of ThermoFoam closed-cell to create a thermal envelope of asbestos roofs whilst eliminating condensation. A thicker coating of 50-60mm will offer great heat retention and structural integrity for your building.


Open-Cell vs Closed-Cell
(In moisture rich environments)

Although we install both open and closed-cell products, not all spray foams are created equal, therefore we are always careful to respect the application uses for both products in achieving the correct install for your building.

Open Cell is a low density sponge like foam, making it an effective barrier against noise transmission and adds good thermal performance to a building.

When used in areas that are susceptible to moisture intrusion, Open Cell foam will absorb this moisture which can create issues within the building or structure it is applied to.

To overcome this, we always recommend an application of Closed Cell foam for buildings that have metal, asbestos or cement roofs. These are commonly held together by bolts and gaskets, which when rusted or broken, act as the first entry point for moisture.

Closed Cell is a high density rigid foam, that acts as a very good vapour barrier. It helps to bind all aspects of a roof substrate to prevent the degradation or loosening of bolt fixings and adds structural integrity.

As little as 25mm of Closed Cell insulation will eliminate condensation whilst an application of 50mm will provide exceptional thermal performance. Both depths offer strong adhesion to the substrate to future-proof its integrity.


We are delighted we chose ThermoFoam for this install as they have a can-do attitude and are excellent communicators. The customer after-care has also been good and they returned instantly when we noticed some remediations were required to a small section of the exterior roof.

Matt Way

General Manager,
Landal Gwel-an-Mor

​Resources

No other Closed Cell foam offers comparative performance!

Spray foam insulation Southampton

Encapsulates & Increases The Lifespan Of Asbestos Roofs

OR CALL 01208 832602 AND FIND OUT IF YOUR ROOF IS SUITABLE FOR THERMOFOAM 

YOUR QUESTIONS ANSWERED

We know this can be a difficult choice so we've listed the most popular questions we get asked

How Does Spray Foam Encapsulate Asbestos?

Is Encapsulation My Only Solution?

Is It Against The Law To Have Asbestos?

Spray foam insulation Southampton

Encapsulates & Increases The Lifespan Of Asbestos Roofs

OR CALL 01208 832602 AND FIND OUT IF YOUR ROOF IS SUITABLE FOR THERMOFOAM

Request A Call Back

Book a Free Survey