Anyone used Gapotape when fitting PIR into ceiling? It looks good, but eye wateringly expensive at 95 quid for 50 meters.
But..... it got me thinking. Why couldn't you just use 8mm thick 150m wide UFH perimeter foam..... its about 20 quid for 50 meters and a layer of foil tape over it. Works out much less expensive..... just not sure on r value compared to the official gapotape.
The other option would be 10mm thick 100mm wide expansion joint foam stuck onto edges of PIR then taped with foil tape. Even this option is considerably cheaper than Gapotape.
Thoughts....
But..... it got me thinking. Why couldn't you just use 8mm thick 150m wide UFH perimeter foam..... its about 20 quid for 50 meters and a layer of foil tape over it. Works out much less expensive..... just not sure on r value compared to the official gapotape.
The other option would be 10mm thick 100mm wide expansion joint foam stuck onto edges of PIR then taped with foil tape. Even this option is considerably cheaper than Gapotape.
Thoughts....
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