The 115mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board is a high-performance polyisocyanurate (PIR) insulation board specifically designed for full fill cavity wall applications. It has a thermal conductivity of 0.021 W/m.K, providing excellent thermal performance. This insulation board can be installed with up to a 10mm residual cavity or as a full fill solution.

Featuring a tongue and groove joint profile, the Thermaclass Cavity Wall 21 insulation board ensures continuous insulation and protection against wind-driven rain. It is lightweight, rigid, and easy to install, making it an ideal choice for cavity wall insulation projects. Additionally, the boards have a low emissivity foil facing on each side, which enhances thermal performance in sealed cavity air spaces.

Specifications

• High thermal performance polyisocyanurate (PIR) insulation board
• Thermal conductivity of 0.021 W/m.K
• Tongue and groove profile minimizes gaps, ensures insulation continuity, and provides protection from wind and rain
• High-performance low emissivity foil facing
• Easy to install, lightweight, and rigid
• Manufactured with an environmentally friendly blowing agent
• Thickness: 115mm
• Width: 450mm
• Length: 1190mm
• Pieces Per Pack: 5
• Pack Per Coverage: 2.68m2
• Weight of 1m2: 3.55kg
• Weight: 9.59kg
• R-Value: 5.45m2K/W
• Fire Rating (Reaction to Fire): E
• Material Type: Polyisocyanurate

Performance

• Excellent thermal performance with a thermal conductivity of 0.021 W/m.K, reducing the required insulation thickness
• Low emissivity foil facing improves thermal performance in sealed cavity air spaces
• Provides continuous insulation and protection from wind-driven rain

Features and Benefits

• Excellent thermal performance: Provides effective insulation, reducing heat loss and improving energy efficiency.
• Easy to install: The insulation boards are lightweight and can be easily cut and fitted into the cavity walls.
• Lightweight and rigid: The boards are lightweight, making them easy to handle and install, while also being rigid and durable.
• Tongue and groove joint profile for continuous insulation: The boards have a tongue and groove joint profile, ensuring a tight and continuous insulation layer without any gaps.
• Low emissivity foil facing for improved thermal performance: The boards are faced with a low emissivity foil, which reflects heat back into the room, further enhancing the thermal performance.
• BBA certified for use in defined full fill cavity wall applications: The insulation boards are certified by the British Board of Agrément (BBA) for use in specific full fill cavity wall applications, ensuring their quality and suitability for the intended purpose.
• Reduces condensation: The insulation helps to prevent condensation build-up within the cavity walls, reducing the risk of dampness and mold growth.
• Improves acoustic insulation: The insulation boards also provide sound insulation, reducing noise transmission through the walls and improving overall acoustic comfort.
• Fire resistant: The boards have a high fire resistance, contributing to the overall fire safety of the building.
• Environmentally friendly: The insulation boards are made from recyclable materials and have a low environmental impact, making them a sustainable choice for insulation.

Applications

• Residential Buildings: This product is widely used in residential buildings for insulation purposes. It helps in maintaining the temperature of the house and reduces the need for heating or cooling appliances.
• Commercial Buildings: In commercial buildings, it is used to provide insulation to the walls and ceilings. This helps in reducing the energy consumption of the building.
• Industrial Buildings: In industrial buildings, it is used to insulate the walls and ceilings to maintain a constant temperature. This is especially important in industries where temperature control is crucial.
• Refurbishment Projects: This product is also used in refurbishment projects where old insulation needs to be replaced with new, more efficient insulation.
• New Construction: In new construction projects, this product is used to provide insulation to the walls and ceilings. This helps in making the building more energy efficient.
• Loft Conversions: This product is also used in loft conversions to provide insulation to the roof. This helps in maintaining the temperature of the loft and reduces the need for heating or cooling appliances.

Installation

When installing the 115mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board, ensure compliance with relevant Building Regulations, guidance, and standards. It is important to follow the manufacturer's installation instructions for best results.

Certifications

• BBA Certified
• Manufactured under ISO 14001:2015 and ISO 9001:2015
• In accordance with BS EN 13165

Equivalent/Related Products

• 90mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board
• 140mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board

About the Manufacturer

Celotex is a leading manufacturer of high-performance insulation products. With a commitment to sustainability and innovation, Celotex delivers reliable and energy-efficient solutions for a wide range of construction applications.

Returns on Thermaclass

Because of the fragile nature and specialized packaging of Thermaclass products, Celotex maintains a stringent returns policy. If a product is opened or damaged in any way, including moisture penetration, approximately 80% of distributed items cannot be resold. As a result, we must impose a 50% restocking fee, and the customer will be responsible for arranging the return shipment of the products to us. Upon receiving the returned goods, we will assess them for credit approval. If credit is approved, we will pass the credit on to you.

CEL-1115 -Datasheet 1 CEL-1115 -Datasheet 2 CEL-1115 -Datasheet 3 CEL-1115 -Datasheet 4

SERVICED LOCATIONS

We offer our customers free delivery* when you spend £400 plus vat or more. For orders less than £400 ex VAT there is a delivery charge of £75 ex VAT. This will be calculated within the checkout process. We only accept orders Monday through Friday. We do not provide delivery on weekends.

This is subject to change given the current lack of drivers servicing the UK. We will do our best to work with all orders that may be in affected areas.** Extra delivery charges may apply to orders in Scotland and the following postcodes**

Currently affected areas : IP, NR, CA, TD, CT, PO, SO, BH, DT, EX, PL, SP, TA, TQ, TR, LL, HR, SY **

This is currently due to the lack of availabily of drivers in these service areas and limited supply in these areas, thus a custom shipping service charge may apply. (£250). Please use the shipping calculor to give you an accurate shipping price based on your post code. We apologise in advance if this occurs for your order. Before placing an order please get in touch with the team and we will see if anything can be done for your order specifically.

There are parts of the UK that we don't deliver to and this will be marked at checkout. (N Ireland and Scotish Highlands). If this occurs upon your checkout, please reach out the team and we will see what we can do via a 3rd party supplier.

PREFERED DELIVERY TIMES

We offer this service to alleviate confusion for you and reduce communication for us all. It gives us an idea on when you would the order to be delivered. It is NOT a garaunteed delivery date. .

We understand scheduling of larger materials to your project is important, thus having your preference is very helpful for us. Please note this works in tandem with the availability of the product. We can NOT fulfill any orders before the avability days set on the product, even if the date insert tool allows it.

There may be situations where if specified a preference date is given, we may not always be able to deliver on that date. As it also linked to you delivery location, the closest warehouse logistics rotar, availability of the product and more. We have simply offered this to help our customers out, please be reasonable with your expectations in these difficult times. We WILL do our best to comunicate accurate delivery times via phone or email after the order is placed, so no need to worry.

After you specified a date we will do our best to deliver on that date, you will be notified within 24-48 hours if we can not fill that day but will strive to get a slot as close as possible to that date. We do not deliver on weekends, so all orders specified with weekend delivery will be shifted to the week after.

On weekdays, our cut-off time for purchases is 1 p.m. Orders must be placed by 1 p.m. on Monday through Thursday to be delivered the next day if they are applicable for next day. For example, an order placed after 2 p.m. on Friday will be sent out on Monday afternoon (if it is not too late).

PRODUCT DELIVERY TIMES

The vast majority of our orders are dispatched within 2–5 working days. However, if you need a customized or bespoke item, things will take longer to arrive. Some goods are on allocation or short supply as a result of COVID 19 and the Brexit. We may be forced to offer an equivalent high-quality substitute product at no extra cost to our customer from time to time.

The delivery charge is applied for shipments to England. If you live in Scotland or Wales, one of our customer care specialists will contact. We do everything we can to make sure packages arrive on the date promised.

If you change the delivery date given at the time of purchase, you will be notified by email or phone. We reserve the right to charge a failed delivery fee if access is restricted for the car specified on the order, and a delivery cannot be completed.

Every transaction is recorded, and the delivery fees are determined on whether or not the recipient is ready to receive the package. This covers manual or automated offloading of heavy items. Offloading equipment, such as a tail lift or forklift, may be requested; however, there may be an additional fee if the site is difficult to access or the products are of considerable size..

On weekdays, our cut-off time for purchases is 1 p.m. Orders must be placed by 1 p.m. on Monday through Thursday to be delivered the next day if they are applicable for next day. For example, an order placed after 2 p.m. on Friday will be sent out on Monday afternoon (if it is not too late).

RESTRICTED ACCESS

If We Or A Supplier Attempt A Delivery And Customer Refuses To Deliver, We Are Not Liable For Any Losses Incurred As A Result Of Our Failure To Notify Us Or The Supplier About Any Access Limitations

At The Time Of Placing The Purchase Or 24 Hours Before Delivery. Delivery Will Be Managed With Below Partners Or 3rd Party Fulfilment.

ACCEPTING YOUR DELIVERY

Upon receiving your delivery, please thoroughly examine all items before signing.

If you notice any issues, such as damage or defects, please refuse the delivery and get in touch with us immediately by calling 02039 916 406 or email sales@buildersinsulation.co.uk.

Important Reminder: Deliveries signed as “unchecked” will be considered to have been received in good condition.

Once your order is delivered to the specified address, responsibility for any loss or damage is transferred to you.

We believe in keeping our pricing transparent. Rather than embedding transport costs into product prices, we calculate carriage charges based on the size and weight of your order. These charges are clearly displayed separately during checkout, ensuring clarity and fairness.