Polystyrene Bead Cavity Wall Insulation Problems

Now if you were to pour a jug of water in at the top of the cavity it will get soaked up by the insulation as it acts just like a sponge which holds the moisture against the walls of the cavity. Similarly if your cavity walls were wrongly insulated this could cause you problems down the line. Imagine your wall cavity filled with a sponge.

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Eps expanded polystyrene beads and polyurethane foam are the most commonly used these days and with good reason.

Polystyrene bead cavity wall insulation problems.

If the puffed beads fill the cavity the space can obtain r values close to that of fiberglass insulation. A popular method of insulating new build cavity walls is to fill the gap in between the two leaves either by pumping them with eps beads or by adding rigid board insulation. Independent research has confirmed that cavity wall insulation is a very reliable process. The cavity is there to reduce the risk of.

This is due to the capillary action of the bead allowing gravity to draw any moisture present down the inner surface of the outer leaf to drain away at foundation level. If you re installing cavity wall insulation it s worth opting for a modern insulating material with proven performance. The problem with this method is the installation. In this application the puffed beads are poured into the wall cavity between the studs by drilling a hole in the top of the wall.

There was an acknowledged problem with one particular brand of bonded polystyrene bead insulation widely used in the 1980s which was put down to poor site supervision of the process the adhesive has to be mixed with the poly beads immediately before they are injected into the wall and this is said to have now been rectified. In ni and roi partial fill cavity wall insulation is widely considered to be the most traditional wall construction build up. The polystyrene used for cwi is in the form of virgin pre formed bead which is usually combined with a. Cavity wall insulation beads will not allow dampness or moisture to penetrate the cavity in a properly constructed wall.

Find out if your home s likely to be affected. Polystyrene beads are full of static electricity and they. The next of the cavity wall insulation problems i m going to cover is. When we went undercover to investigate the quality of insulation suitability inspections in 2011 our findings suggested that you can t always rely on assessors to carry out thorough inspections or warn of potential damp problems even those from big brands such as marks spencer npower and tesco.

Mineral fibre this is the same yellowish brown wool like insulation that is typically used in lofts as can be seen above. Problems are therefore extremely rare but if they do occur ciga has the expertise to ensure that they are swiftly rectified. Coincidentally this issue also tends to affect houses that have been retrofitted with blown in fibre insulation such as mineral wool and fibreglass wool more than houses treated with eps expanded polystyrene beads. Cavity wall insulation can cause damp.