Timber preservation

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Timber preservation

Whether you’re building a new garden shed or you’re adding decking to your garden, you’ll need to think about timber preservation. Timber preservation and treatment is vital to keeping wood, especially wood that’s used outdoors, in good condition for as long as possible. Without treatment, wood is susceptible to damp, dry and wet rot, mould and insects such as woodworm. This is especially the case for softwoods like pine – while hardwoods like oak should still be treated, it’s vital that you have any softwoods around your home treated to keep them from decaying. Luckily, there are plenty of tradespeople that will do that for you.

Why should I have my timber preserved?

Lots of timber that people use for decking and garden sheds comes untreated. If you leave it that way, it won’t be long until moisture gets in and you could end up with damp or rot. Moss and algae are also common on decks if they’re left moist without much sun. There’s also a risk that your timber could become infested with woodworm, which are the wood-eating larva of many species of beetle. They will burrow into the wood and leave lots of small holes and powder as they go.

All of these problems will cause the wood to become weak, and depending on what the timber is used for it could cause serious structural damage, so it’s important to get timber treated to prevent any problems from arising.

Types of timber preservation treatments

  • Water-based treatments The most common timber preservative used for outdoor woods, for example on fencing, decking posts, joists and sub-structures, is copper-organic. It’s a water-based treatment that is suitable for timber that is going to be in contact with the ground or fresh water. It doesn’t have a smell and won’t discolour adjacent materials. It can be applied in a specialist pressure treatment facility or vacuum and adds a strong protective layer on the surface of the timber. It gives the wood a soft green colour, but it can have a dye added to give it a brown colour.
    If a professional is applying a water-based timber preserver for you outside, make sure that it’s a Class 4 treatment. Class 4 preservatives ensure that any wood that’s going to be subject to moisture for most of its life will last as long as possible. If it’s for an indoor treatment, make sure that it’s suitable for protecting against insect attacks and fungus.
  • Oil-based wood preservatives Preservatives mixed with linseed or tung oil penetrate deeper into the wood than water-based timber treatments. This means that generally you’ll get a longer-lasting, glossier finish. The oils repel water so will help prevent damp, mould and rot, but they might give off strong smells. It’s best to ensure you can stay away from the treatment area for a few days, and if inside, make sure there’s plenty of ventilation.
  • Solvent-based timber preservatives Solvent-based treatments are great at preventing rot, fungi, decay and mould, and often come as a clear treatment as well as a range of wood tone colours. They’re ideal for exterior projects since there will be a strong smell as the treatment’s applied, so again it’s best to stay away from the area once it’s been treated.

Will timber treatment save you money?

In the long term – yes! While it might seem like the cheaper option to use untreated wood for your project and leave it that way, you’ll only end up needing to replace it more quickly.

If you treat any timber you use, both inside your home and out, you’ll get decades of use out of it. If you leave it untreated, it may not even last 10 years outside. And untreated wood used in the construction of your home could even cause structural damage, so it’s definitely more money-saving to spend out on timber preservation now.

Average Timber preservation cost

The typical cost of Timber preservation is £680. Costs can change based on the materials and the business selected. The upper price range can be as high as £816. The material costs are usually around £200

Average price per Timber preservation job in 2021

Avg. price low

Avg. price low
£241

Avg. price

Avg. price
£1,099

Avg. price high

Avg. price high
£2,374

£2500

£1875

£1250

£625

£0

Prices based on actual Timber preservation costs, as reported by local Quotatis members.

Timber preservation installation cost in 2021

Labour cost £460
Material cost £200
Waste removal £20
Time frame: 1 day

Advantages for Timber preservation

  • Increases the lifespan of the timber both inside and outside
  • Prevents woodworm and other insect infestations
  • Prevents damp, dry rot, wet rot, mould and fungus
  • Creates a good surface for painting over

Disadvantages for Timber preservation

  • If you don't use a Class 4 preservative outdoors, timber will still degrade quickly
  • Some water-based preservatives can cause wood to swell, which may result in internal twisting and splitting
  • Solvent- and oil-based preservatives can give off strong-smelling fumes that may be unpleasant

Timber preservation Manufacturers

Timber preservation FAQs

Rated Local construction professionals

SL Decor

1 review(s)
Based: in London, AL2 1QY

Painting & Decorating business that has been running for 17 years . I have over 25 years experience.

TRANSFORM DECORATORS

1 review(s)
Based: in Bedfordshire, LU4 0SD

TRANSFORM DECORATORS based in Bedfordshire, offer services in Painting & Decorating. They have an average rating of 5 from 1 review(s). See their latest 5 star review below

David Burns Contracts

4 review(s)
Based: in Co armagh, BT62 2HZ

All types of roofing work under taken from start to finish timber slating tiling flat roofs buytle rubber coverings

First Call Direct

26 review(s)
Based: in Swindon, SN5 5GQ

First Call Direct based in Swindon, offer services in Painting & Decorating. They have an average rating of 4.5146153846154 from 26 review(s). See their latest 4 star review below

BOSS BUILDERS

3 review(s)
Based: in Swindon, SN3 3EQ

Hi, we are a small building company. That specialises in extensions house Renovations bathroom and Kitchen refit And roofing work. We have been running for around 30 years. A family-run company many thanks Carl

CURE IT CONTRACTS LTD

5 review(s)
Based: in Lanarkshire, ML3 6DS

Cure it contracts ltd are a small ltd company. We cover a 50 mile work area from ml36ds We are new to this site but we are not new to the roofing trade. We are 30yrs time served with my father. Now my sons are in the business with me. We are fully...

Impact Roofing

2 review(s)
Based: in Leicester, LE9 4LH

Impact roofing is a trusted, professional & reliable roofing company with unrivalled expertise in the industry. Drawing over 30 years of experience, we focus on providing all types of roofing services giving each customer a outstanding quality servic...

Newquay Painters and Property Maintenance

2 review(s)
Based: in Truro, TR4 8PN

We are a small family run business who pride ourselves on top quality work for affordable prices. Feel free to get in touch with any questions you may have

MJS Roofing and Building Services

4 review(s)
Based: in London, SE10 9TX

Hello my services I offer to you are coming from 16 year experience. We go that extra bit further to keep all our customers happy. All our work comes with guaranteed thanks.

SSG’s SOLUTIONS UK LTD

1 review(s)
Based: in London, E13 0PB

SSG’s SOLUTIONS UK LTD based in London, offer services in Painting & Decorating. They have an average rating of 5 from 1 review(s). See their latest 5 star review below

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