Shed warranty – old (do not use)

Robertson Timber offers a 12-month from date of delivery, parts warranty upon all shed products.


Timber is a natural product and prone to changes in appearance, including some movement and the occurrence of small knot holes or splits in extreme temperatures and weather conditions. Any splits, knots or similar visual imperfections in the timber will not affect the structural integrity of the product in any way, are not considered to be damage, and do not render the product unfit for purpose. Whilst every effort is made to hand pick timber without visible knotholes or splits there may be occasions where timber is selected in good faith that contains what appears to be a solid knot. Over the course of time/during movement of the product etc it may occur that these small knot holes are then dislodged from the timber leaving a small knot or crack.


Unfortunately, we cannot be held responsible for this maturing of the product and can only offer our best advice as how to deal with this situation in the unlikely event that it should occur. All of our sheds are made with pressure treated timber throughout. The nature of this pressure treatment is to pump our Tanalith E8000 deep into the timber to prevent rot and decay, this does mean that when you receive your shed it may still have a slight dampness in the material upon delivery/installation. This is normal and will dry out fairly quickly when out in the fresh air. This does not affect your ability to paint the shed and we recommend painting your shed immediately upon installation to protect and preserve the timber.


The Robertson Timber 10 Year Guarantee

Our guarantee offers protection against general timber rot and decay – the guarantee does not cover the product against timber splits or warping which may occur naturally over time. To maintain the validity of these guarantees the product must be assembled strictly in accordance with the instructions supplied, treated annually with an appropriate high-quality preservative and all glazing units must be sealed (Internally and externally) with silicone or other water tight sealant. For more information on how to correctly assemble and maintain your garden building please consult our Shed assembly guide here:


The Robertson timber guarantee will be deemed invalid if;

The base upon which the product is assembled is not suitable – all buildings should be assembled on a firm and level base constructed from a suitable material – for more information please contact us for guidance.

The product has not been treated after delivery/assembly and treated annually thereafter with an appropriate high-quality preservative.

Any windows have not been sealed, inside and out, with silicone or other watertight sealant.

The product has been customised or adapted in any way.

At any point after assembly the building has been in contact with any trees, plants or exterior walls which could allow moisture to penetrate the timber.

Any timber has been cut, pierced, or drilled without a subsequent application of approved cut-end treatment.

The eventual claimant was not the original purchaser of the product.

The roofing felt or covering has been damaged or incorrectly fitted allowing water ingress – please see our product assembly section.

Please note timber is a natural product and prone to changes in appearance, including some movement, warping and splitting, particularly in extreme weather conditions. This will not affect the structural integrity of the product – this is natural and is not covered by a guarantee.