Are Recticel Insulation products suitable for use in inverted roofs?
No, they should be installed below the waterproofing membrane.
Are Recticel Insulation's products environmentally friendly?
Our boards are an extremely efficient form of insulation and over the life of a building will save far more energy in their use than required in their production, resulting in significant reductions in energy consumption and cost, as well as reduced CO2 emissions.
Are thermal calculations done in the same way for all building elements?
Generally speaking, yes - all calculations are done by the 'combined method'. However, ground floors differ slightly from other building elements in the information that is required. If requesting a calculation for a ground floor, please ensure that you provide a floor area and length of the exposed perimeter (i.e. the length of new floor along outside-facing walls). This allows us to calculate a perimeter/area ratio, which is crucial in the floor calculation.
Are you planning to insulate a gutter on a terrace, which needs to comply with the required U-value, but you have limited space?
At Recticel Insulation, we are committed to supplying high-quality insulation solutions for flat roofs. This is the reason why we created Deck-VQ - a tailor-made vacuum insulation solution for insulating terraces, where there is limited space.
Deck-VQ ensures that you can achieve the same U-value with your gutter as on your terrace. No more thermal performance losses through the gutter!
To make the installation simple and most efficient, we are happy to provide a customised installation plan.
Contact our Vacuum Insulation specialists to discuss further.
Are you planning to insulate a terrace, which needs to comply with the required U-value, but you have limited space?
At Recticel Insulation, we are committed to supplying high-quality insulation solutions for flat roofs. This is the reason why we created Deck-VQ - a tailor-made vacuum insulation solution for insulating terraces, where there is limited space.
Deck-VQ gives the opportunity to achieve low U-values within minimal insulation build-up, which is vital in many refurbishment and new build projects where there are structural or planning constraints. To make the installation simple and the most efficient, we are happy to provide a customised installation plan.
Can a breather membrane be laid directly over Recticel's insulation boards?
Different breather membrane manufacturers have different guidelines for their products, and these should always be consulted prior to installation. It may be possible to lay the breather membrane on the insulation, but with a counter batten airspace above.
If you would like to discuss application of any specific project, please contact our Technical Services.
Can electric cables be channelled into Recticel insulation boards?
No, as this would reduce the performance of the boards. Cables can penetrate the insulation with no detriment to the cable sheathing. Any cables penetrating or lying against insulation should be oversized to cater for increased operating temperature. If in doubt, consult a qualified electrician.
Can I get a U-value calculated for my project using Recticel Insulation products?
Absolutely! Please contact our freephone technical helpline on 0800 085 4079 or use our free of charge U-value calculator here.
Can I install downlighters in conjunction with Recticel Insulation boards?
The temperature of a lamp can reach 2000C. Without adequate ventilation to allow the escape of heat, downlighters can cause fires. Recticel recommends the following measures are taken when installing downlighters: Downlighters should not be recessed into insulated ceilings if they penetrate the vapour control layer (VCL). This will result in them drawing warm moist air into the roof space where it could condense and drip back out of the fitting, causing a potential fire risk. Where downlighters are to be used they should be fitted into a false ceiling below the structural ceiling. Overheating can occur where thermal insulation is laid over existing downlighters and any associated transformers that are not designed to operate under these conditions. Cables and other electrical equipment should not be covered by insulation. In all cases, the downlighter manufacturer's instructions should be followed. They should specify the amount of space to be left around the back of the fitting, its fire rating, whether it can be covered with insulation, and the type/wattage of suitable lamps. If in doubt, consult a qualified electrician.
Can I put tiles or a wooden terrace on Deck-VQ® vacuum insulation?
Deck-VQ® is suitable for application in terraces with a tile or wood finishing. You should foresee an adequate amount of supports with a base surface on the waterproofing membrane of at least 100 cm².

Attention: the waterproofing membrane should be selected carefully so it can withstand the point loads, generated by the terrace supporting structure (e.g. appropriate spacers).
Contact our vacuum insulation specialist