How to make the attic ready for PUR foam insulation?

At what stages of construction is the attic insulation made with PUR foam?

What is the best time to insulate the attic with polyurethane foam? It can be done at various steps of the house construction, however, it is recommended to plan the insulation just before the finishing works. Application of the foam requires appropriate conditions, such as temperature or humidity of the wood - applicators always check these parameters before commencing works. PUR foam insulation should be carried out at the final step of construction works, once plasters and floors have been laid. If you want to speed things up, you can opt for artificial drying of the surface. However, remember that these will involve extra costs.

What should be kept in mind before applying polyurethane foam in the attic?

Insulating an attic with polyurethane foam, e.g. Purios Eopen-cell, requires adequate preparation. Before applicators start any operations, doors, windows and other spots susceptible to dirt should be protected with foil. Most companies include this service as part of standard pricing, but it is advisable to consult with the contractor.

Seek specialist advice and find out whether your loft needs a vapour-proof membrane. Except that you should also consult about ventilation and finishing. If the attic insulation foam is to be covered with plasterboard, you need to install brackets to fix it beforehand.

Step by step arrangements for attic foaming

If you hire properly qualified workers, the attic foam application will go quickly and smoothly. In most cases, contractors do all the preparatory work for the spraying themselves. However, it is worth knowing how to take care of this preparatory work. What should you focus on?

• Remember that the surface on which the PUR foam will be applied should be stable and free of impurities, and membrane joints should be secured.
• Before you insulate the attic with polyurethane foam, hangers and anchors should be mounted to the frame for plasterboard panels. Fasten the fixing elements to the rafters. After the foam has been applied, you can easily remove it to install profiles and plasterboards. Such work is also often done by applicators upon prior arrangements.
• At the roof windows, you should make gypsum board muntins. This will make it possible to precisely seal the roof window. Cover the window with plastic sheeting as the foam is difficult to remove from glass and other surfaces.
• Make sure you tidy up and remove any necessary items. This will make the fitter's work easier and prevent tools from accidentally getting foamed.

PUR foam insulation requires finding a professional team which is experienced in polyurethane foam insulation and provides a guarantee for the quality of the work. Only properly applied thermal insulation material will allow you to achieve measurable effects and effectively protect the house against heat loss.