Inclined Insulated Upstand for Flat Roof Skylight 1000 x 1500 mm
Inclined Insulated Upstand for Flat Roof Skylight 1000 x 1500 mm Original price was: £ 279.61.Current price is: £ 233.01. incl. VAT
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Inclined Insulated Upstand for Flat Roof Skylight 1200 x 1200 mm
Inclined Insulated Upstand for Flat Roof Skylight 1200 x 1200 mm Original price was: £ 268.43.Current price is: £ 223.69. incl. VAT

Inclined Insulated Upstand for Flat Roof Skylight 1000 x 2000 mm

Original price was: £ 335.53.Current price is: £ 279.61. incl. VAT

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  • 15mm OSB
  • 40mm core cavity insulation
  • 6 degrees natural incline across the short side
  • Suitable for cold and warm roofs
  • Compatible with all roof coverings
  • Precision-engineered sizes
  • Available off the shelf

Available on back-order

Arrives for your Project: 25th Feb – 3rd Mar
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Fully Insulated OSB Upstands

Our OSB Skylight Upstands are designed for dependable performance on flat and low-pitched roofs. Manufactured with precision and built to meet modern building standards, they deliver strength, thermal efficiency, and weather protection in one complete solution — trusted by trade professionals across the UK.


FeatureBenefit
High-Strength OSB ConstructionPrecision-bonded 15mm OSB ensures consistent strength and long-term stability.
Integrated Thermal Insulation40mm insulated core with XPS insulation helps reduce heat loss.
Excellent Thermal PerformanceAchieves a total heat loss value of 0.63 W/m²K.
Built-In 6° Roof InclinePromotes efficient water run-off and prevents pooling on the skylight glass.
Airtight & Weather-Resistant DesignSecure skylight interface protects against drafts, moisture, and external elements.

How Our Insulated OSB Skylight Upstands Work

Built for Professional Installations

Each upstand raises the skylight to the recommended minimum of 150mm above the finished roof level, supporting best practice installation while enhancing weather resistance and long-term performance.

Designed with installers in mind, our OSB Skylight Upstands save time on site, reduce labour costs, and provide peace of mind from installation through to completion.

View Available Sizes & Order Today

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