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100mm X 2.4m X 1.2m Underfloor Pir Insulation (8' X 4') (Uf)

100mm X 2.4m X 1.2m Underfloor Pir Insulation (8' X 4') (Uf)

Product Code

127035

€57.95 €47.11

/ Price Per SHEET

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More Information

Upgrade your floors with high-performance insulation that’s built for trades and DIY projects alike. The 100mm Underfloor PIR Insulation (Product Code: 127035) provides superior thermal efficiency, keeping heat where it belongs while helping reduce energy bills. Lightweight, rigid, and easy to handle, it’s perfect for timber or concrete floors in domestic builds and renovations.

Engineered for underfloor use, this PIR panel delivers consistent performance, easy cutting for custom layouts, and a strong, stable base that won’t sag or compress over time. Ideal for new builds or retrofit projects, it’s the go-to choice for tradespeople who demand reliability without compromise.

Key Features:
- High Thermal Efficiency: Rigid PIR board offers excellent insulation performance, reducing heat loss and improving energy efficiency.
- Durable & Lightweight: Strong, stable panels that are easy to cut and handle on-site.
- Perfect Dimensions: 100mm thick x 2.4m long x 1.2m wide (8’ x 4’) — covers large areas quickly.
- Easy Installation: Fits snugly between joists or under concrete screeds, ideal for both new builds and refurb projects.
- Moisture Resistant: Closed-cell PIR structure resists damp, mold, and compression.
Technical Specifications:
- Product Code: 127035
- Dimensions: 100mm (thick) x 2.4m (L) x 1.2m (W)
- Material: Rigid PIR Insulation
- Application: Underfloor insulation for timber or concrete floors
- Standards: Complies with current building regulations for thermal performance

TJ’s Tip:

For best results, cut panels carefully with a sharp insulation knife for a snug fit around joists and edges. Leave no gaps to ensure maximum efficiency and consider pairing with a vapour control layer for added protection against moisture.

Specs

More Information
Barcode	127035
Brand	Xtratherm
Weight	21.0000
Provided by	TJ O'Mahony
Delivery Rule	large & heavy

Delivery

Last update: 02-Dec-2025

Delivery Timeframes:

Small Items: 2-3 working days
Large/ Bulky items: 5-7 working days
Extra Large appliances & TV's: 5-7 working days
Click & Collect: 1 working day

Delivery Zones (Nationwide):

Zone 1: Dublin, Galway, Kildare, Limerick, Meath, Offaly, Tipperary, Wexford, Wicklow
Zone 2: Carlow, Clare, Clifden, Kilkenny, Laois, Louth, Waterford, Westmeath
Zone 3: Cavan, Cork, Donegal, Kerry, Leitrim, Longford, Mayo, Monaghan, Roscommon, Sligo

Delivery Charges:

	Small & Light	Large & bulky	Extra Large
Zone 1	€9.99	€25	€50
Zone 1	Free delivery on orders over €400		no free delivery

Zone 2	€9.99	€50	€50

Zone 3	€9.99	N/A	N/A

* Effective from 3 December 2025
* Free delivery on order over €400, applies to Small & Light, Large & Heavy items within zone 1 only.

Zone Indicator:

To help you understand delivery availability, every item displays a zone icon, icons appear on the top-right corner of each product image:

Types of goods	Available zones	Descriptions
Small & light items	All Zone area	Items under 20kg weight & under 2m long, (some fragile items may not be included e.g. glass/mirrors)
Large and bulky items Extra Large items	Zone 1 & 2 only	Wet & hazardous bagged, items over 20Kg weight & oversized; Euronics white goods, TVs of all sizes.
Large Paint items (6L / 6L+)	Zone 1 only	Large hazardous items (6L+) - available for collection

Available zones	Indicator	Descriptions
All zone area		This icon with all zone area in green, indicates this items can be shipped to all Zone.
Zone 1 & 2 only		Zone 1 & 2 in green and zone 3 greyed out, indicates this product can only be shipped to Zone 1 and 2
Zone 1 only		Zone 1 in green zone 2 and zone 3 are greyed out, indicates this product can only be shipped to Zone 1 only.

Old Appliance Collection:

When you buy a large appliance, we’ll collect your old one for free through WEEE Ireland. Please ensure it is uninstalled, disconnected, and ready for pickup. Collection is like-for-like and takes place at the front door or apartment entrance. Restrictions may apply based on access and item type.

Free Click & Collect:

Click & Collect is free and available on items in stock at your chosen branch. Click Here to see our Branch Locator.

How it works:

Place your order online
You will receive an order confirmation email
Our team processes your order, please allow up to 4 hours
Within branch opening hours, we aim to have your order ready the same day.
You will receive an email once your order is ready for collection.

Returns

At TJ O'Mahony we will exchange or refund any Retail unused product returned to us in its original condition within 30 days of receiving it (*)You can return any unused product to us in its original condition for a full refund or exchange within 30 days of delivery.

This right to return does not apply to products that are non stock and only available to order such as catalogued doors, catalogued bathroomware and mixed paints which are made especially for your order.

Please note that we are unable to accept returns on certain bagged building products and materials, including (but not limited to) hard wall, cement, bonding, slates, and ridges. We appreciate your understanding and recommend checking product requirements carefully before purchase.

*View our full returns policy on our Terms &Conditions Page.