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| FAQs |
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Below are some of the questions our customers ask before having their roofs restored by ROOF-TEK...and the answers
1. How long has the system been in use?
Sprayed urethane foam was developed in America over 30 years ago and introduced into our Country in the mid 70s. The directors of Roof-Tek have been involved with the system for over 20 years.
2. Is it approved by Building Societies?
Yes. Both architects and surveyors have regularly specified its use in commercial and domestic properties - many of them listed.
3. Does the system cause condensation?
No. Quite the contrary. Condensation previously forming on the underside of the slates/tiles is completely eliminated as the average thickness of foam raises the surface temperature well above dewpoint.
4. Does it cause deterioration of the roofing timbers?
No. Roof-Tek urethane foam does not constitute a moisture-vapour barrier and therefore allows the timbers to 'breathe'. Ventilation of the roof-space is maintained by leaving conventional air gaps at soffit-level or by installing further vents in the roof, to meet current Building Regulations.
5. Does the system present a fire risk?
Again No. Roof-Tek urethane foam meets British Standards BS 476 Part 7:71 to Class 1 surface spread of flame.
6. Will it add substantial weight to the roof?
The hardwearing Roof-Tek foam is extremely light and will add a mere 2kg per square metre of roof area.
7. If there are rooms in the attic area can the system still be used?
Yes. It is technically possible to carry out an installation around rooms in lofts. The insulation benefits make the rooms much warmer in winter and cooler in the summer.
8. Can alterations to the roof be made later - i.e window installations?
Certainly. But it would be more cost effective to make them first. Ask about our Velux Roof Window fitting service.
9. Does the material show from the outside?
No. As long as the Roof-Tek Technicians have checked the roof to ensure all missing, slipped or unsuitable tiles or slates have been replaced our fast-curing foam will not run out between the tiles or slates.
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Click here to view Case Studies for the Pitched Underspray System,
and the High Performance Flatroof System
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