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When planning a timber project, it’s easy to focus on the timber itself and leave the choice of fixings until last. But choosing the right fixings is an important part of getting a great, long-lasting result.

The right screws, nails and other fixings help keep your project secure, protect the appearance of your timber and stand up to the conditions it will face outdoors.

Why do fixings matter?

Timber naturally responds to changes in temperature and moisture, expanding and contracting as the seasons change. Outdoor projects must also contend with rain, damp conditions and general weathering.

Using unsuitable fixings can lead to corrosion, staining, loose joints and premature deterioration. The best choice will depend on the type of timber you’re using, where it will be installed and the demands of your project.

For many outdoor timber projects, stainless steel fixings are an excellent choice. They offer good corrosion resistance, helping to maintain the strength of the fixing and reduce unsightly rust staining on the surrounding timber.

This is particularly important when working with hardwoods such as oak, as well as other timber species that contain naturally occurring tannins or extractives.

At Hartwell & Co, we recommend considering stainless steel fixings for projects such as:

Oak sleeper raised beds: Help keep sleepers securely joined while reducing the risk of rust staining on the timber.

Hardwood decking: Choose fixings suitable for the decking timber and its exposure to the weather, helping maintain a neat finish over time.

Oak board cladding: The correct fixings help secure the boards while accommodating the natural movement of the timber.

Cedar shingle roofing: Use appropriate corrosion-resistant fixings designed for the roofing application and compatible with the shingles and any other materials.

Garden structures and landscaping: From pergolas to bespoke timber features, suitable fixings help provide durable, reliable connections.

Not every project requires the same grade of stainless steel. For particularly exposed locations, coastal environments or certain timber species, a more corrosion-resistant grade may be necessary. Always check the fixing manufacturer’s recommendations for the timber and intended application.

Oak and tannin staining: why material choice matters

Oak is a popular choice for landscaping, cladding and garden structures thanks to its natural character and durability. However, it contains tannins that can react with iron in ordinary steel fixings when moisture is present.

This reaction can produce dark blue-black staining around the fixing points, sometimes spreading across the surface of the timber.

Stainless steel fixings are generally a better choice for oak because they help reduce this risk. They also offer greater resistance to corrosion than standard unprotected steel fixings.

For the best results, use fixings specifically recommended for oak and ensure they are suitable for the conditions in which the timber will be used.

Screws or nails: which should you choose?

The right fixing depends on the job.

Timber screws are often a good option where a strong, secure connection is needed. Different designs are available for applications ranging from landscaping and decking to heavier timber construction. Some specialist screws can also reduce the need for pre-drilling, although this depends on the screw, timber and application.

Annular ring nails have rings along the shank that help improve their holding power in timber. They are commonly used for applications such as fencing and timber boarding, where an appropriate nail provides a practical and effective fixing.

Specialist fixings may be needed for particular jobs, including decking systems, cladding, roofing and structural timber connections. Always follow the manufacturer’s guidance on fixing type, size, spacing and installation.

A few things to consider before you buy

Before choosing your fixings, think about the following:

Timber type: Oak, cedar, treated softwood and other timbers have different characteristics. Check compatibility with your chosen fixing.

Location: Outdoor, exposed and damp environments generally require better corrosion resistance than dry indoor applications.

Fixing length and diameter: The fixing must be suitable for the timber thickness and the connection being made, with sufficient penetration into the supporting timber.

Appearance: If you want a clean finish, consider the fixing material, head type and whether the fixing will be visible.

Installation: Some hardwoods benefit from pre-drilling to reduce splitting and make installation easier. Follow the fixing manufacturer’s instructions.

Structural requirements: For load-bearing structures, use fixings specifically rated and specified for the application. A general-purpose screw may not be suitable.

Find the right fixings at Hartwell & Co

At Hartwell & Co, we stock a range of fixings to help you get the most from your timber project, including stainless steel options for suitable outdoor applications.

Whether you’re a trade customer working on a landscaping project or tackling improvements in your own garden, choosing the right fixings from the outset can help protect your timber, achieve a better finish and provide lasting performance.

Planning a timber project? Pop in to Hartwell & Co at Weston Sub Edge, near Chipping Campden, and take a look at our range. We’re always happy to help you find suitable fixings for the job.
Browse the range online – click here
Call us on: 01386 840373, Email: info@hartwellfencing.co.uk

Visit: Timber Yard, Weston Sub Edge, Chipping Campden, Gloucestershire, GL55 6QH
01386 840373