
Sawn Green Treated Timber Post 100mm x 100mm x 3000mm
Our 3m sawn green treated timber posts provide robust support for decking frames. Pressure-treated with Tanalith ‘E’ for durability, they resist decay and weathering. FSC® Certified and responsibly sourced, these posts ensure a strong, sustainable foundation for any decking project. Ideal for both professional and DIY use.
Why Choose Our 3m Sawn Green Treated Timber Posts?
Our 3m sawn green treated timber post is the ideal solution for creating a strong and durable decking frame. Designed to provide robust support for decking joists, these high-quality timber joists form a reliable foundation for your outdoor decking projects.
Each post is pressure-treated with Tanalith ‘E’ preservative, ensuring protection against decay and weathering, while also being responsibly sourced and FSC® Certified to meet sustainability standards.
Post specifications
Length: 3m
Width: 100mm
Depth: 100mm
These timber posts are perfectly suited for heavy-duty decking applications. They are designed to deliver both strength and longevity, making them a key component for any professional or DIY decking installation.
For optimum strength, secure in place using concrete or support with a concrete block or paving slab.
Joist spacing should be a maximum of 400mm apart and should be supported by a post every 1m. Additionally, any cut ends should be treated with an exterior-grade wood stain to maintain its integrity.
For additional flexibility in your decking project, we supply a range of green-treated joists, in lengths of 4.2m and 4.8m.
If you need further guidance, our installation guides are available to help you every step of the way.
Looking for an alternative timber joist?
See our C24 sawn green treated timber decking joist 47mm x 100mm
Looking for a timber decking board?
See our 4.8m timber decking board
Or browse our timber decking department for decking boards and more…
Order A Sample Pack!

Click Here to view our installation guide.
Download the datasheet for Sawn Green Treated Timber Post 100mm x 100mm x 3000mm
Type | When? | Cost? | ||
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National Delivery | Orders under £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£192.00 |
Orders over £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£96.00 | ||
Orders over £1,500 | Est. 5 working days* Roofing items 7-10 working days* |
FREE | ||
Scotland Delivery | Est. 15 working days* Roofing items 7-10 working days* |
£360.00 | ||
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Millboard Delivery | Orders under £2,000 | Est. 5 working days* | £192.00 |
Orders over £2,000 | Est. 5 working days* | FREE | ||
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Parcelforce Standard | (Small Parcels) | 3-5 working days* | £8.50 |
Parcelforce Standard | (Large Parcels) | 3-5 working days* | £30.00 | |
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Sample Packs via Courier | 5 working days* | FREE |
*Please allow for public holidays and weekends (non-delivery days)
Some of our products are available for collection from our warehouses in Okehampton (Devon) and Andover (Hampshire) - This option will show at checkout, when available.
Standard collection lead time is 3-5 working days, this may vary depending on the product. If you would like to collect your order after 2 hours, please choose this option at checkout.
Please note that collections are only available from Monday-Friday, 08:00 - 17:00 & Saturday, 08:00 - 12:30 (Note: this IS the cut off time for collections, despite our closing time of 13:00)
Please Note The Following Prior To Collection:
Vehicles we can and cannot load
Cladco Profiles will only load flatbed lorries and flatbed trailers for insurance purposes. If the appropriate vehicle is not available, two people would be required for a collection.
Cladco Profiles will NOT load any vehicles with roof racks, horse boxes, cattle lorries or fixed-sided trailers. Cladco Profiles has the right to refuse loading a vehicle for any reason.
Before arranging a collection, please read our Customer Collection Notice below.

Our Okehampton HQ and Warehouses (Devon)

Our Andover Warehouses (Hampshire)








Customer Collection Notice
For those customers wishing to collect materials, we ask you report to the office first in order to be seen by a member of the sales team. Your goods will then be picked and brought to your vehicle.
Please note that during busy periods you may experience a wait while our yard staff serve other customers or are loading/unloading other vehicles.
We respectfully draw your attention to the following points:
- It is the ultimately the responsibility of the customer to load his/her vehicle and to ensure the goods are safely/ securely strapped down.
- Our staff will be happy to assist you load your goods onto appropriate vehicles by way of fork lift trucks. Our staff will not handball any goods into enclose vehicles. The loading of the vehicle is carried out entirely at the customers own risk. We will not be held liable for any damage that may occur to your vehicle or goods collected from our premises during the transport of said goods.
- It is the responsibility of the customer to ensure both their vehicle and the goods are safe when they leave our premises.
- We can advise the approximate weight of materials prior to you arriving so that you can be sure your vehicle is capable of carrying the intended load. Please ensure that you bring appropriate ropes, straps or other securing materials as we are unable to provide you with any upon arrival.
- We strongly recommend you bring suitable protection materials to prevent your ropes/straps etc. be damaged by these edges. We recommend that you use good quality protective gloves when handling materials.