Caffin: Case Study

Getting started

Preparing the walls


Static caravan

To produce a static caravan shell;  this building needed to be able to be split in two halves once erected, and transported if ever required. This building had to comply with all the characteristics (shape / dimension) of a conventional static caravan but to be able to blend into the surrounding environment. The client brief was they wanted a shell so they could fit the inside out themselves.

  • A steel skeleton to make the building rigid if it required to be moved
  • 100mm x 50mm Tanalised C16 Framework
  • 4mm WBP Plywood
  • Tyvek breather membrane
  • 25mm x 50mm Tanalised batons
  • 20 125 Thermowood cladding


  • 150mm x 50mm C16 Tanalised Rafters
  • Cladded with a 20mm x 150mm 5th Pine Tongue and Grove Ship
  • Tyvek breather membrane
  • Grey Felt Tiles


  • 38x50mm Tanalised Runners
  • 22 x 150 white wood Tongue and Grove
  • 25mm Celotex
  • Finished with a 18 mm Caber Chipboard Flooring

These buildings do not have to be inspected by a Building Regulations Officer but do have to comply with British Standards. Static caravans are non Vat rated so a big saving can be had. If desired Poultons can fit out the internal specification

What sort of base will I need for my garden building?

  • Discover the best base to use for your garden building.
  • Learn why assessing the area is so important.
  • Find out whether a concrete or timber base is best.
  • Discover why a sub-frame is a quick and easy way to lay a base and why it’s great for undulating ground.
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