Stock SIP panels: 5-10 working days
UltraSIPs

UltraSIPs

Extra Large Garden Room Technical Drawing

£540.01

Inc VAT. Digital delivery for drawings. Lead time approx. 7-14 days.

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Extra Large Garden Room Technical Drawing

Digital Delivery

Digital delivery for drawings. Lead time approx. 7-14 days.

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.

Ask us to checkConfigure your kit

Stock

Available to order

Support

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What you get

What you get with this drawing service

A clear wall and roof SIP shell using 122mm panels as standard, with the fixing and weathering essentials separated from optional extras.

Wall and roof SIP shell
Splines, fixings and membrane
Floor, glazing and installation kept separate

Before you order

  • Digital files are supplied to your account/email once ready.
  • Basket pricing is checked before checkout, so you will be prompted to refresh if a stored basket has old prices.

Included

  • Digital drawing pack to the agreed scope
  • 2 free amendments for drawing work started from 03/04/2026
  • Email/account delivery once ready

Not included unless stated

  • Physical delivery
  • Structural calculations unless shown separately
  • Further revisions after the included amendments

Need help before ordering?

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

View FAQs

Why customers choose UltraSIPs

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

Garden room kit specification

This garden room kit includes 122mm SIP panels for the walls and roof only, plus splines, fixings, and waterproofing membrane. The floor is sold separately if needed. SIP thicknesses can be changed before ordering.

Details

This is for larger garden rooms. Have a design in mind? Even a rough sketch is enough for us to turn into detailed 3D technical drawings ready for manufacture. If you go on to order your kit from UltraSIPS, the drawing fee will be deducted from your final invoice. We also include two rounds of amendments free of charge, which can cover changes such as window and door positions or sizes, wall dimensions, roof adjustments, openings, and other general layout refinements. Any further alterations beyond this are charged at an hourly rate.

SKU: xl-garden-room-drawing

Lead time

Digital delivery for drawings. Lead time approx. 7-14 days.

Need drawings?

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

Send drawings

Thermal data

Check indicative U-values before confirming the final specification.

Check U-values

Thickness guide

Not sure which SIP panel to choose?

Compare U-valuesConfigure

122mm

Garden rooms

A practical starting point for non-habitable outbuildings, studios and garden rooms.

172mm

Extensions

Usually the safer default for habitable spaces, annexes and Building Control routes.

222mm

High performance

Used where lower U-values or stronger roof performance are part of the brief.