What air gap is required between insulation and breather membrane?
This should be confirmed in the membrane manufacturer's BBA certificate, though 25mm to 50mm is typical.
What are the main tips for installing Recticel Insulation boards correctly?
- Use the right board for the application - the right type and the right format.
- Store the boards in a dry place above the ground, and use them when they are dry.
- Handle boards carefully - do not throw or kick them, be careful not to damage them.
- Ensure the intended substrate/base is clean, even, dry and smooth.
- Apply an air screen, sealing layer or damp resistant layer if necessary, particularly in flat roofs.
- Push boards together well.
- Always keep boards dry during rain showers.
- Always cover boards at the end of the working day.
- Always follow installation instructions provided.
- Always use the right attachment methods.
- Measure and cut accurately to fit using a fine toothed saw or sharp knife
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Ensure that any adhesive is compatible with the foam
What if I cannot provide all of the information required for thermal calculations of a specific project?
It is possible for us to make certain assumptions when performing a calculation, but this can reduce the accuracy of the final result. Assumptions are routinely made about the types of fixings to be used, but we will always try to inform you if a general figure has been used where more accurate data could affect the calculation result.
What insulation products can be used with underfloor heating?
Recticel Insulation's Eurothane® GP boards are compatible with both wet and electrical underfloor heating systems. Clipping a wet system through the VCL described above will not compromise the performance of the VCL or the insulation.
What is the BBA Competent Person Scheme?
The scheme, of which Recticel Insulation is a member, is designed to ensure consistency and accuracy in the provision of U-value calculations through a process of assessment, certification and continuous monitoring. Not all insulation manufacturers are members of the scheme.
What membranes are required in flooring application when using Recticel PIR insulation boards?
For installation on a concrete slab it is recommended that a damp proof membrane is installed below the insulation and then an additional vapour control / separating layer above the insulation before the screed / floating floor finish.
For suspended floor applications such as timber joists there should be the vapour control / separating layer included again before the finish of timber or screed.
What quality standards do Recticel Insulation products meet?
Recticel Insulation prides itself on the quality of its product, particularly its dimensional stability and flatness. We consider the quality of our boards to be second to none. Recticel operates a Quality Management System in accordance with the requirements of BS EN ISO 9001:2015 and offers CE Marking to 'ISO EN 13165 - Thermal insulation products for buildings - Factory made rigid polyurethane foam (PU) products - Specification'.
When installing Recticel PIR insulation boards on a suspended timber floor can it be put directly onto joists?
No, a suitable timber substrate should be included over the joists (minimum 18mm) before installing the insulation.
Where can I find Recticel's Declarations of Performance (DoP) to support CE Marking claims?
DoPs are a requirement of CE Marking. All products are required to have one, listing the essential characteristics and performance of the product as declared under the CE Marking standard. Recticel Insulation's DoPs can be found here.