For many years lofts and attics have been insulated by various means but none more popular than the method known as spray foam insulation.
This method involves polyurethane foam being sprayed onto the interior or exterior (or both) of the roof. It is then left to harden or cure.
The cost of this treatment may be subsidised by local authorities or government. Money saved by preventing loss of heat through the roof can be significant, as the following article reveals...
Access for Repairs
However, time flies and one day you may need to remove hardened foam from your loft so as to be able to carry out repairs such as a cracked or broken tile.
The best advice is to call a professional who is qualified and experienced in removing spray foam roof insulation. But if you want to do it yourself here are some time saving tips to action...
Unfortunately, you will find tough areas which require a more aggressive treatment. For these you can tunnel through cured foam and then cut sideways with a reciprocating saw
Time To Get Tough!
If the foam has hardened you may be able to scrape it off with a stiff-bristled or wire brush. The use of plenty of hot water and gentle detergent will ensure any residue left behind is removed.
Unfortunately, you will find tough areas which require a more aggressive treatment. For these you can tunnel through cured foam and then cut sideways with a reciprocating saw.
Obviously you should ensure before you cut that you know the location of pipes and cables etc.
Often of use will be old tools such as claw hammers and old carpentry chisels ensuring the latter are not so sharp as to damage walls.
Be very careful with using acetone in a confined space. If you can smell it you need more ventilation. Yet despite this, it can be a handy way to remove uncured foam
Acetone: A Viable Option
Acetone or nail polish remover a can help to remove uncured foam. Test it first on a small patch to make sure it doesn’t cause damage. Don´t use detergent and water because water causes the foam to cure. On cured foam water can be used without problem.
Be very careful with using acetone in a confined space. If you can smell it you need more ventilation.
Having noticed the way the foam runs away from heat, many believe this is the best way to remove sprayed foam. How wrong they are! Harmful toxins may escape into the air if foam is heated or burned.
Lacquer Thinner: Another Trick Of The Trade
Lacquer thinner is an excellent solvent and highly efficient for removing spray foam roof insulation that has cured. This can be obtained from most paint shops or DIY stores. As with Acetone, it must not be used in confined spaces without considerable ventilation.
Removing spray foam roof insulation can prove extremely difficult. You may wish to consider using the special tools which are available for sprayed foam removal. Among these are knives which if operated carefully will remove it without too much difficulty. There are instructions with these tools which should be carefully read before using them.
Spray polyurethane foam if applied professionally is not easily removed. Little point exists in spending several days hacking at the foam to save money. If you damage a roof or walls you’ll need to hire professionals to repair them!
Polyurethane foam is an excellent insulator but difficulties arise if it is applied directly to the underside of the roof. Repairs and maintenance jobs are more time consuming simply by having to remove it.
Home Logic Spray Foam Experts apply it to a breathable membrane and then attach it to the roof. This can easily be removed to allow access to any or all parts of the roof in just a few minutes. Sorted!
Removing Spray Foam Roof Insulation – The Ultimate Answer!
There is an extremely simple answer to the problem of sprayed foam which has to be removed. Home Logic Spray Foam Experts apply it to a breathable membrane and then attach it to the roof. This can easily be removed to allow access to any or all parts of the roof in just a few minutes. Sorted!