Description

Bourne Storage Building – Apex, with timber floor

The Bourne Storage Building is a robust, multi‑purpose structure designed exclusively for Bourne Buildings by our trusted manufacturer, Topwood. Engineered for heavy‑duty use, it offers a long‑term solution for a wide range of storage needs — from housing vehicles and machinery to supporting business equipment, club facilities, or secure domestic storage.

Built to a higher specification than standard garden buildings, the Bourne Storage features thicker 15mm tongue‑and‑groove cladding, 15mm floor and roof boards, and 3″x 2″ framing throughout, delivering exceptional strength and durability. Every building is treated inside and out with a solvent‑based preservative for added protection.

As standard, each model includes security double doors, four framed windows (two fixed and two opening), toughened glass, 24kg polyester‑based felt roofing, and professional installation. A wide range of sizes is available, along with optional upgrades such as double‑glazed windows and doors, EPDM rubber roofing, Onduline roofing, and lining & insulation.

Whether you need a reliable garage, a workshop, a storage hub for equipment, or a functional office space, the Bourne Storage Building provides a strong, adaptable and long‑lasting solution tailored to your requirements.

With floor: 

This model is supplied with a timber floor as standard. For customers intending to use the building as a garage (for example, for storing a vehicle), it is available without a timber floor, which must be bolted down on a flat, level concrete base of the exact required size. Once your order is placed, we will email you the precise base measurements needed. Boling down is an option you can add to your order.

Make It Your Own — Fully Bespoke Options

Every garden and every customer is different, which is why the Topwood buildings can be tailored to suit your exact needs. Whether you’re creating a workshop, a hobby space, or simply need smarter storage, Topwood’s flexible build options let you design a shed that truly works for you.

You can customise:

• Layout & Door Positioning – Choose the configuration that best suits your garden and how you plan to use the space.
• Window Style & Glazing Options – Add more light, reduce visibility, add security windows, or even no windows! There are many glazing styles and types to choose from.
• Door Types & Configurations – Add additional doors for multi‑entry convenience, or even upgrade to double glazing!
• Roof Coverings – From standard felt to more durable or decorative finishes.
• Roof Overhangs or Verandas – Add character, extra weather protection, or a more architectural look.
• Shelving & Workbenches – Create a ready‑to‑use workspace or maximise storage from day one.
• Additional Height (or Reduced Height) – Increase headroom for comfort, or lower the building to meet planning considerations.
• Any many more options!

Premium Redwood Construction

Topwood buildings are crafted from Scandinavian Redwood Pine, a slow‑grown, denser timber that naturally offers greater durability and stability than cheaper whitewood alternatives. This means:

• Less seasonal movement
• A stronger, longer‑lasting structure
• A more premium finish

Redwood (if not pressure treated) requires annual maintenance with a solvent based preservative applied to the outside of the building every year – Add Pressure Treatment + Solvent Treatment to your order, to lower maintenance to every 6 – 8 years!

Redwood has a desired service life of 25 years + with suitable maintenance.

Colour varies depending on treatment applied.

Specification

• 15mm (finished size) x125mm Tongue & Groove shiplap cladding
• 15mm (finished size) x125mm Tongue & Groove boards.
• Treated inside & out with solvent based preservative.
•  3”x 2” (45x70mm) throughout
• 24kg polyester based mineral felt over 15mm (finished size) x125mm Tongue & Groove boards.
• Doors: Bourne Storage (with floor) up to 5’ wide double doors. –
• Garage (no floor) up to 7’ wide double doors (6ft if 8ft wide or under).
• Door height 6’6”
• 4 no. 2’ x 2’ windows (2 fixed & 2 opening, in frames)
• Apex only – Gable windows on standard height models

** All sizes are approximate **

Guarantee

Topwood Garden Buildings come with a 12-month guarantee against faulty parts and workmanship, and 10 years against wood rot, providing the building is treated & maintained on a regular basis from the time of supply.

Treatment options available:

Pressure Treated & Solvent Treatment

Pressure treated timber is pressure treated by being held in a vacuum and impregnated with a preservative solution. This offers longer lasting protection against wood rot, fungal disease & insect attack.

Pressure treated timber is a low maintenance option – Once the timber has had its initial coating of a solvent based wood preservative (or a suitable wood protective coloured paint), the building will only need to be treated again approximately every 6 – 8 years, rather than on an annual basis. The Bourne Storage already comes with the first initial solvent treatment already carried out. 

Pressure treated timber has a light green/yellow colouration (if not solvent treated), and a desired life in excess of 25 years with suitable maintenance.

** Please note all pressure treated featheredge buildings must also be solvent treated due to higher moisture content.**

Solvent treatment (wood preservative) protects against wood rot and fungal disease and seals the building against moisture ingress. We recommend that this is applied as soon as possible after installation, although Pressure treated buildings will benefit from a few weeks before treatment or paint is applied, to allow the moisture levels in the timber to reduce, leading to a better finish.

Installation & Base Requirements

We offer installation on Topwood buildings (location dependent), giving you a stress‑free experience from start to finish.

To enable installation, your building must sit on a flat, level, firm base made from paving slabs or concrete. The base should:

• Match the size of the building (can be larger, but never smaller)
• Be completely flat & level to a spirit level standard, with no drainage slope
• Sit at least 2 inches above ground level to avoid ground water running underneath

For larger bases or restricted airflow, please refer to our guidance on bearers.

** It is the customer’s responsibility to provide a suitable base for their building, with clear and safe access **

Bearers can be added to your order at an additional cost. Bearers are pressure treated / tanalised timbers that raise a shed up off the ground to prevent the floor from getting damp and rotting. They need to be laid on flat, level, compact ground (or on top of level paving slabs/concrete).  Bearers should be used if the base is larger than the footprint of the building, or if there is restricted airflow around the building, (i.e. a fence or wall very close to the shed) to avoid rain water building up and sitting against the floor of the building.

Clearance

We recommend 18″ clearance around the building for installation, airflow, and future maintenance. Topwood can work with as little as 8″ clearance as a minimum, but this must be stated on the order.