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Customer Questions & Answers for
High Performance Underlay 8.5m

A technically advanced underlay ideal for all floating floors such as laminate and real wood. Each pack covers 10.2m2. Easy to use folded underlay with integrated moisture barrier. The moisture barrier will stop damp spreading to you laminate or real wood flooring, no need for separate damp proof membrane. Improves walking comfort and reduces associated noise. Great sound deadening qualities, sound reduced by 20dB. Easily cut to size and simple to lay. Can be used on timber and concrete sub floors. Provides a firm and thermal insulated foundation for your new floor. Do NOT use directly over floorboards or underfloor heating.
Customer Questions & Answers:
9 Questions
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10 Answers
Overall Rating:
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Questions & Answers for High Performance Underlay 8.5m

Question
Can i use the high performance underlay in conjuction with underfloor heating?
will it be able to with stand the high temperature from either the loose wire heating/foil heating or the mat heating?
Asked 4 years, 5 months ago
By
teapots10
on High Performance Underlay 8.5m
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2 Answers
Answers
Answer 1
Have to disagree with the previous answer. Yes you can use this with underfloor wire matting. just have the wire matting on the top of the silver foil. the foil servers to stop the heating going down into the concrete by reflecting the heat upwards- therefore IMPROVING the overall effectiveness of the underfloor heating.
Answered 3 years, 3 months ago
By
Pblueman
 - Carnmenellis
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Answer 2
This product is not suitable for use with underfloor heating as it incorporates a foil layer and this will reflect the heat back away from the room.
Number One Contributor
Number One Contributor
Answered 4 years, 5 months ago
By
WickesTeam
+2points
2out of 2found this answer helpful.
Question
do I need to glue or join the edges and if so what do I need to buy to do this?
Asked 4 years, 4 months ago
By
Buttons
 - Bucks
on High Performance Underlay 8.5m
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2 Answers
Answers
Answer 1
The sheets come with a self adhesive edge on the long side, which is covered by a strip of the reflective foil from the next sheet.
However if you have to cut across the sheet and make a join, e.g. around an obstacle, there is no overlap so you may decide to use a PVC based carpet tape for those cuts.
Top 500 Contributor
Top 500 Contributor
Answered 3 years, 6 months ago
By
TedL
 - Devon
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Answer 2
This product can be installed without glue or tape, however if you are after a nice and tidy finish, we would recommend using our General Purpose Tape (Product code 600719)

http://www.wickes.co.uk/General-Purpose-Cloth-Tape/invt/600719
Number One Contributor
Number One Contributor
Answered 4 years, 4 months ago
By
WickesTeam
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Question
I am laying wood flooring can I glue wood together using the high performance underlay
Asked 4 years, 1 month ago
By
Anonymous
 - Bristol
on High Performance Underlay 8.5m
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2 Answers
Answers
Answer 1
I assume you've done this by now, but yes. Wood glue is pretty harmless stuff chemically.
Top 10 Contributor
Top 10 Contributor
Answered 3 years ago
By
Kieran
 - Taunton
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Answer 2
Yes; the Wickes glue does not adhere to the reflective upper surface.
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Top 500 Contributor
Answered 3 years, 6 months ago
By
TedL
 - Devon
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Question
Can I use this product with the green fibreboard underlay?
Hi, I bought first the green fibreboard underlay and have now purchased the high performance underlay. Can I combine those two?
I had mould patches on my timber flooring (initially under carpet without damp proof membrane). The walls have now been injected and I have treated the mould on the timber. I want to make sure I do the right thing now. Can I put the high performance underlay first and then put the green fibreboard on top to thicken the underlay a bit and then put the laminate flooring or would this make the problem even worse as no ventilation at all?
Asked 4 years, 6 months ago
By
Anonymous
on High Performance Underlay 8.5m
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1 Answer
Answers
Answer 1
You can use our High Performance Underlay in conjunction with our Fibre Boards however we suggest sorting out a Damp Proof Membrane first before undertaking this job as this will not resolve mould or damp requiring at a later date.
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Number One Contributor
Answered 4 years, 6 months ago
By
WickesTeam
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Question
When using high performance underlay and fibreboard on concreate, what goes on top of what
Asked 3 years, 7 months ago
By
Anonymous
on High Performance Underlay 8.5m
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1 Answer
Answers
Answer 1
Put a moisture guard (green) sheet down first, then the fibreboard, then the reflective underlay. That way damp won't come up through the concrete and destroy the fibreboard. The reflective layer with the polystyrene backing needs to go just below the floorboards so it helps cushion them, and reflects heat back up.
Top 10 Contributor
Top 10 Contributor
Answered 3 years ago
By
Kieran
 - Taunton
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Question
I plan to put this under my carpet underlay above DPM and concrete floor - is this do-able? Will I see any benefit?
Asked 3 years, 6 months ago
By
Anonymous
on High Performance Underlay 8.5m
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1 Answer
Answers
Answer 1
Yes and yes. You may want to think about additional insulation though as this stuff is pretty thin and although it will help, the concrete will suck heat out of the room fast. Look at a Cellotex layer if your design allows for the depth.
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Top 10 Contributor
Answered 3 years ago
By
Kieran
 - Taunton
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Question
I have a 2msq section of floor raised by 3mm can I use a combination of 1 and 2 layers of High Performamce Underlay to make up the difference?
Asked 3 years, 4 months ago
By
Anonymous
on High Performance Underlay 8.5m
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1 Answer
Answers
Answer 1
I wouldn't recommend it as it does compress so you will find that the floor will still sink 2mm. Your best bet is to get some self levelling compound and pour on to make it the same level.
Top 10 Contributor
Top 10 Contributor
Answered 3 years ago
By
Kieran
 - Taunton
+1point
1out of 1found this answer helpful.
Question
Can high performance underlay be used for under Carpet
I suffer from damp in our new Flat, I would like to use this product, as it has a vapour barrier plus is reflective, We have concrete floors, that are very cold
Asked 4 years, 1 month ago
By
Thanatos
 - Plymouth
on High Performance Underlay 8.5m
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0 Answers
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Question
CAN I USE THIS UNDERLAY IN THE BATHROOM
Asked 3 years ago
By
Rasa
on High Performance Underlay 8.5m
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0 Answers
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