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Splines

PLEASE NOTE- WHEN ORDERING A SPLINE IT NEEDS TO BE 25MM SMALLER THAN THE PANELS BEING ORDERED.

WE DO NOT RECCOMEND USING SIP’S SPLINES IN THE FLOOR, ROOF AND CORNERS OF THE BUILD – THESE WILL NEED TIMBER SPLINES FOR STRENGTH.

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. 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!
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  • Celotex Spline 142mmCelotex Spline 142mm
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    ULTRASIPS

    Celotex Spline 142mm

    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...
    £10.76
    £10.76
    Choose Options
  • Celotex Spline 122mmCelotex Spline 122mm
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    ULTRASIPS

    Celotex Spline 122mm

    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...
    From £9.24
    From £9.24
    Choose Options
  • Celotex Spline 96mmCelotex Spline 96mm
    Choose Options
    ULTRASIPS

    Celotex Spline 96mm

    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...
    £8.49
    £8.49
    Choose Options
  • Celotex Spline 72mmCelotex Spline 72mm
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    ULTRASIPS

    Celotex Spline 72mm

    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...
    From £6.89
    From £6.89
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  • Celotex Spline 47mmCelotex Spline 47mm
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    ULTRASIPS

    Celotex Spline 47mm

    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...
    £7.30
    £7.30
    Choose Options

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