Stock SIP panels: 5-10 working days
UltraSIPs

ULTRASIPS

PIR Spline 142mm

Celotex PIR core with Sterling OSB3 skins for structural strength and airtightness.

£13.73

Inc VAT. Choose delivery or collection at checkout.

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PIR Spline 142mm

Delivery is calculated separately.

Delivery is calculated at checkout from the project size, postcode zone, and vehicle load. Collection is free.

Please make sure suitable offloading is available on site. HIAB/Moffett/offloading assistance is not supplied as standard.

Not sure this is the right SIP product?

Send us your sizes, drawings, or intended use and we'll check the panel thickness and package before you order.

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What you get

What you get with this product

A clear product order with VAT shown before checkout and support available if anything needs checking.

Selected product and variant
Order confirmation
Support if specification needs checking

Before you order

  • Stock SIP products are usually available for UK mainland delivery in 5-10 working days.
  • Basket pricing is checked before checkout, so you will be prompted to refresh if a stored basket has old prices.
  • Choose delivery or collection at checkout. Delivery quotes use postcode and load size.

Included

  • Selected product/variant
  • VAT shown before checkout
  • Order confirmation and account tracking

Not included unless stated

  • Delivery unless shown at checkout
  • Installation unless explicitly included
  • Third-party items not listed on the order

Need help before ordering?

Read the SIP panel, kit, delivery, structural allowance and installation FAQs before placing an order.

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Why customers choose UltraSIPs

UK workshop supportPanel schedules where neededInstant courier quoting where availableTurnkey install support available

Thermal Performance

Celotex PIR insulation with consistent, low U-values.

Manufacturing

Precision-cut panels with labeled components for faster installs.

Details

Our 142mm SIP panels use a rigid PIR insulation core bonded between OSB facings for exceptional strength and thermal performance. Standard panel size is 1220 x 2440mm (4' x 8'), suitable for walls and roofs. Manufactured in the UK and supplied ready to cut and fit. Our product proudly features Sterling OSB3, known for its exceptional structural strength and superior water resistance. We've paired it with Celotex or an equivalent, leading in thermal insulation with the best lambda U value available, complete with dual foil facers that double as a vapor barrier, simplifying your build by eliminating the need for extra barriers. Each board is meticulously bonded with a robust two-part PU glue, ensuring uniform strength and durability. Crafted with precision under 120 tonnes of pressure, our boards boast an impressively low tolerance of just 1 to 2mm. For projects demanding the highest precision, we also offer boards with less than 1mm variance. Reach out to discover more about our high-quality boards and competitive pricing. Let's elevate your project together!

SKU: Spline142-234080

Delivery

Delivery is charged separately and calculated from postcode zone and order size. Collection is free.

Delivery details

Need drawings?

Send your sketch for a same-day review and an engineered layout. Drawing orders are supplied digitally to the agreed scope.

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Thermal data

Check indicative U-values before confirming the final specification.

Check U-values