IKO glass fibre underlay is a waterproofing membrane manufactured to BS 747 Type 3B. It consists of a strong glass fibre base, coated with oxidised bitumen and is sand finished on both surfaces. Features & Benefits: IKO Roofing Felt Shingle Underlay 3B - 20m x 1mWaterproofi... Read More
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IKO glass fibre underlay is a waterproofing membrane manufactured to BS 747 Type 3B. It consists of a strong glass fibre base, coated with oxidised bitumen and is sand finished on both surfaces.
Question:
Has the IKO Felt Shielding have a top or bottom and how do you fix it?
Answer:
The IKO Roofing Felt Shingle Underlay 3B can be applied with either side facing up. However, typically, the smoother side of the underlay is faced upwards to provide a cleaner surface for the shingles. In terms of fixing it to your roof, it's recommended to use roofing nails or staples, attaching the underlay to the roof deck in a shingle fashion, starting from the bottom and working your way up. This allows each subsequent layer to overlap the one below it, which helps to prevent water infiltration. Remember, it's always good to consult a roofing professional or refer to the product's installation guide to ensure you're installing it correctly. Please note that this information is provided as a general guideline and the actual installation process may vary based on your specific circumstances and local building codes.
Question:
I am re-felting my shed roof and plan to use IKO Super Shed Felt. Would it make sense to also use a glass fibre underlay as well.
Answer:
Using the IKO Roofing Felt Shingle Underlay 3B can be beneficial when re-felting your shed roof. It provides an additional layer of protection, helping to improve the roof's longevity and durability. The underlay is designed to be installed beneath the IKO Super Shed Felt and serves as an extra barrier against harsh weather conditions. However, the need for an underlay may depend on your specific circumstances, such as the condition of your roof deck and the climate in your area. If you're unsure, it may be best to consult with a roofing professional.
Question:
When laying this underlay what overlapping is required. It seems to say a roll will do a 20m shed which suggests no overlaps but is that right??
Answer:
For the IKO Roofing Felt Shingle Underlay 3B, overlaps are indeed required and will affect the usable coverage of each roll. Typically, a horizontal overlap (along the length of the roof) of a minimum of 50mm is needed. For end overlaps (where separate lengths of underlay meet), a minimum of 75mm to 100mm is recommended. Even though the roll is designed to cover a gross area of 20m², once overlaps and trimming are taken into account, the effective coverage is usually around 18-19m². So, it's important not to assume the full 20m² is usable without overlaps. Always make sure to account for overlaps and additional material needed at the verges and eaves when calculating how much product you will need.
Question:
My leanto has presently polycarbonate sheeting and I intend to replace with 18mm osb boarding and iko square shingles. Is it an idea to use iko underlay before the shingles. What is the pack weight of the underlay and also the iko shingles. Reason I ask is the weight spread over 4m length by 3m height at 15-20 pitch. Just worried about the leanto able to support the overall weight
Answer:
Using an underlay before applying the IKO square shingles is indeed a good idea. The underlay provides an extra layer of protection against water penetration and also smoothens any minor imperfections on the roof deck. The IKO Roofing Felt Shingle Underlay 3B is specifically designed for this purpose. You can find more details about the product on our website at this link: IKO Roofing Felt Shingle Underlay 3B - 20m x 1m. In terms of weight, the IKO Roofing Felt Shingle Underlay 3B weighs 30kg. For the weight of the IKO square shingles, you may need to check the specifications on the product page or consult our technical team, as this information isn’t provided here. Regarding your concern about the weight that your lean-to can support, it's advisable to consult with a structural engineer or a qualified builder, as they would be able to assess your structure and provide the most accurate advice.
Question:
Can you tell me how thickness of this underlayment.
Answer:
approx 2/3mm
Question:
Can Top sheets be torched onto this product ? If not How will top sheets be applied.
Answer:
Technically yes, however, this is a shingle underlay.
Question:
I plan to replace a worn felt shingle log cabin roof with roofing felt. Two questions, 1) Should I apply an underlay membrane before applying the felt? 2) What roofing felt do you suggest for my 4 meter X 3 meter pitched roof log cabin? I would like it to last for a minimum of 15 years.
Answer:
underlay is always best practice, please email or call me tomorrow and we can look at what type of shingle would be best for you cabin
Question:
How is this fixed when using under felt shingles ?
Answer:
Clout nails or Felt Adhesive
Question:
Hello. Need underlay under torch on felt on flat roof. Is it suitable?? Thank you
Answer:
No this is not a torch on I will email you some ideas
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