How to Insulate Timber Rafters - ISOVER G3 Metac Touch

Рет қаралды 248,398

10 жыл бұрын

Learn how to insulate Pitched Roofs between Timber Rafters with ISOVER’s Metac G3 Touch Insulation.
If you want to learn more about ISOVER’s pitched roof solution, you can visit our website at goo.gl/qWZOYR.
You can also download the Pitched Roof Solutions Guide here: goo.gl/qWZOYR
ISOVER Metac G3 Touch is a high performance mineral wool insulation roll, with both excellent thermal and acoustic properties. It is designed for pitched roofs between rafters and in timber frame constructions. It is made with natural recycled materials and has been awarded Eurofins Gold - the highest award of indoor air quality, making it an excellent choice for residential applications.
A slab and a roll, Metac G3 Touch is a self supporting mineral wool, with excellent recovery and strength. Metac is available in a variety of thicknesses and splits to suit common rafter widths and depths in pre-cut and solid rolls.
You can watch our step by step video on how to install Metac G3 Touch insulation above. We recommend that when installing, you also use the Vario Xtra Safe membrane system as well for the best thermal performance.
If you have any questions, simply get in touch with us via our website at:
goo.gl/dwbmVe
Or chat with us on our social media pages:
Facebook: isoversaintgobainireland
Twitter: ISOVERIreland
LinkedIn: linkedin.com/company/isover-ireland

Пікірлер: 30

@velvetcoolcat4964 2 жыл бұрын

I have wooden slated boards running under the tiles. Would it be ok to push insulation right up to this?

@alikhan7903 5 жыл бұрын

What goes on the top of the main wood frame from the outside? The same thing?

@IsoverIreland 5 жыл бұрын

Hi Ali, different materials are used from the outside, please contact our technical team for more details around it www.isover.ie/contact-our-technical-team

@ross2007 6 жыл бұрын

What happens if you have some air vented roof tiles, do you leave a gap for that bit or go over it?

@IsoverIreland 6 жыл бұрын

Hi Ross, thank you for getting in touch. Best thing to do would be to contact our Technical Team: www.isover.ie/contact-our-technical-team

@felixreali7101 3 жыл бұрын

would it not be easier/better to post the reply right here where everyone can see it?

@jlewis1688 3 жыл бұрын

@@felixreali7101 They don't know the answer

@felixreali7101 2 жыл бұрын

@@jlewis1688 i agree. they completely ignore the fact that air needs to flow between the roof and the insulation. and before you know it, you'll have spent a lot of money on your insulation and you end up with damp and mould issues

@ryanh3285 5 жыл бұрын

Does there need to be a gap between the insulation and roof tiles?

@IsoverIreland 5 жыл бұрын

Hi Ryan, it depends on the type of roof tile and roofing felt that are used and whether they are ‘air open’ or not. Best thing to do would be to contact our Technical Team: www.isover.ie/contact-our-technical-team

@jlewis1688 3 жыл бұрын

@@IsoverIreland they don't know

@newmmusic 5 жыл бұрын

What about the 50mm air gap required between insulation and felt? Surely this will cause condensation build up?

@IsoverIreland 5 жыл бұрын

Hi Joe, if it’s a breathable roof covering (natural slate, concrete roof tile or fibre cement slate with battens and counter-battens and a low resistance underlay) a ventilated space is not required. If it’s a not breathable roof covering (fibre cement slates with only counter-battens or bituminous felt) a 50mm continuous ventilated space is required all in accordance with BS5250. Best thing to do is to check with our technical team to see if the roof meets these requirements www.isover.ie/contact-our-technical-team

@gdfggggg 5 жыл бұрын

In my area building control won’t let you install this stuff as it soaks up condensation.

@IsoverIreland 5 жыл бұрын

Hi Slashley, insulation on its own doesn’t cause condensation. Incorrect detailing and not using the correct method of vapour control may lead to condensation. We would be happy to do a u-value calculation and condensation risk analysis if you want to contact the tech dept with the construction details.

@griftersvids9085 4 жыл бұрын

No way Building Control would let you get away with that

@IsoverIreland 4 жыл бұрын

Hi there, thank you for getting in touch. Full fill insulation is permitted under BS 5250 which is the code of practice for control of condensation in buildings. Full fill in a pitched roof application is acceptable where you have a breathable roof covering under the standard. It is also cited in S.R. 82:2017 which is the Code of Practice for Slating and Tiling where it is recognised that full fill mineral wool is compressible and won't hinder the job of the roofing membrane. Please contact the technical department for further information www.isover.ie/contact-our-technical-team

@quintdewit4870 3 жыл бұрын

How does it feel te get told how to do something

@enforze 2 жыл бұрын

😃

@PaulARSENALFC Жыл бұрын

Prefer this if using Tyvek or other breathable felt, who uses anything else now, then the rafters can breath, think there’s a lot of brown envelopes being passed around to use solid PIR boards, which, no matter what you do to contain the dust, it’s gets everywhere, I purchased a festool cutting tool for it, with my festool extractor, the fine dust still gets everywhere, also, we tested some with a lighter, it’s burnt with rancid black smoke, I’d also say the PIR boards are more hazardous to health, it’ll be banned, it should be banned.

@gauravvij67 Жыл бұрын

It's ok if covered with plasterboard then it's 30 minute fire safe in which the fire would likely burn itself out anyway from lack of fuel

@Jelop666 5 жыл бұрын

1.Should be a gap between the ISOVER metac and the roof 2.Two layers of Isover metac rools - first vertically and second horizontally 3. Aluminium Channel U or C shape on the top 4. On the aluminum construction ISOVER VARIO® KB1 tape and finally STOPAIR ISOVER membrane ( half price - around 55eur for 67.5m2 ! in EU ) or most expensive VARIO® XTRASAFE - ISOVER VARIO DOUBLE FIT

@IsoverIreland 5 жыл бұрын

Hi Sebastian, if you need help or have a question, contact our technical team: www.isover.ie/contact-our-technical-team

@DVDFHardTarget 4 жыл бұрын

Rockwool far better than this stuff. You need a 50mm air gap unless you use breathable roofing felt. Wouldnt use any kind of glass or [insert name] mineral wool.

@IsoverIreland 4 жыл бұрын

Hi there, our mineral wool creates a fully breathable roof system in conjunction with a low resistance underlay and air-permeable roof finish and a well-sealed ceiling in accordance with BS 5250 and therefore doesn’t need the 50mm air gap. Risks due to building failures can be further mitigated through the use of the Isover Vario airtightness system. For further details, please contact our technical department www.isover.ie/contact-our-technical-team or check out our courses at the Saint-Gobain Technical Academy - www.saint-gobain.ie/technical-academy

@johndarcy2545 2 жыл бұрын

It's good to know that the 50mm air gap is not necessary when there is a breathable membrane. That's music to my ears as I went and bought the stuff the same width as my rafters not thinking about it. For the comment about rockwool. It's not in the same league as Metac sorry. Rockwoll won't stay in the rafters. It breaks up easily and itches like nothing else