For reliable, long-lasting support on larger decking and outdoor projects, the Treated Moulded Decking Post 100x100mm x 3.0m is a trade favourite. Pressure-treated for durability and finished in a clean tan, these 3-metre posts provide solid structural support for decks, pergolas, fencing, and other garden builds, combining strength, stability, and ease of installation.
Engineered for outdoor use, the posts are fully pressure-treated to resist rot, decay, and insect attack. The moulded edges not only give a professional finish but also make handling and fixing simpler on site. Ideal for both trade and DIY applications, these posts ensure your structure stays strong for years.
Key Features:
Pressure-Treated Timber: Built to last in all weather conditions, perfect for outdoor decks, pergolas, and fence posts.
Extra-Long & Robust: 100mm x 100mm x 3.0m for maximum support on larger structures.
Moulded Edges: Smooth, rounded finish for a neat, professional look and easier handling.
Durable & Weather-Resistant: Resistant to rot, decay, and insect attack for long-term reliability.
Versatile Use: Ideal for decking supports, pergolas, fences, and general outdoor structures.
Technical Specifications:
Dimensions: 100mm x 100mm x 3.0m
Material: Pressure-Treated Softwood
Finish: Tan moulded edges
Usage: Decking posts, pergolas, fencing, and outdoor construction
Timber sizes are nominal and will reduce after machining. Resulting in the finished size being 4mm to 8mm smaller than advertised.
TJ’s Tip:
For a secure, long-lasting installation, set posts into concrete footings or metal post anchors.
We offer reliable delivery services throughout the Republic of Ireland, with straightforward delivery charges for both trade and DIY customers. Delivery options are confirmed at checkout based on your order and delivery Eircode.
Delivery Charges & Delivery Times
Delivery Type
Delivery Area
Delivery Charge
Delivery Time
Small Items
Republic of Ireland
€9.99
3–4 working days
Large & Heavy*
Standard delivery area
€29.99
5–7 working days
Extra Large*
Standard delivery area
€50.00
5–7 working days
Paint 5L or less**
Standard delivery area
€19.99
5–7 working days
Swipe sideways to compare delivery options.
Small Items
Delivery area
Republic of Ireland
Charge
€9.99
Delivery time
3–4 working days
Large & Heavy*
Delivery area
Standard delivery area
Charge
€29.99
Delivery time
5–7 working days
Extra Large*
Delivery area
Standard delivery area
Charge
€50.00
Delivery time
5–7 working days
Paint 5L or less**
Delivery area
Standard delivery area
Charge
€19.99
Delivery time
5–7 working days
*Standard delivery policy. Promotional delivery rates may apply during campaigns.
Additional Information
FREE delivery on eligible Small Items and Large & Heavy orders over €1,499, within the standard delivery area only.
Special Order and Catalogue Products require an additional 5 working days.
FREE collection of old appliances is available through WEEE Ireland when purchasing qualifying large appliances.
FREE Click & Collect is available for items in stock at your selected branch.
Large & Heavy and Extra Large items are available within our standard delivery area only.
Paint delivery Paint in tin cans 5L or less is available for delivery. Larger sizes and paint supplied in plastic buckets are available for Click & Collect only.
TJ O'Mahony offers a 30-day returns policy on eligible unused products, giving you additional time beyond the statutory 14-day cooling-off period applicable to most online consumer purchases.
Eligible products can be returned for a refund or exchange within 30 days of delivery or collection, provided they are unused, in their original and re-saleable condition, complete with all supplied parts and accessories, and accompanied by proof of purchase.
Please note: Return restrictions apply to certain products, including Mixed Paint, certain Bagged Building Products, Solid Fuel, Special Order, Non-Stock and Catalogued Products.
Your statutory rights in relation to faulty, damaged, incorrectly supplied or non-conforming goods are not affected.
