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100mm x 100mm Moulded Decking Post Treated

Product Code
var_100mmx100mm_mdpT-C

Timber sizes are nominal and will reduce after machining.

Resulting in the finished size being 4mm to 8mm smaller than advertised.

From €17.50 €14.23
/ Price Per ITEM

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For strong, reliable support in any decking or garden project, the Treated Moulded Decking Post 100x100mm x 1.8m is a trade favourite. Crafted from pressure-treated timber and finished in a durable tan, these posts provide the backbone for decks, pergolas, and other outdoor structures, combining strength with ease of installation.
Designed for outdoor use, the posts are fully pressure-treated to resist rot, decay, and insect attack. The moulded edges give a neat, professional appearance while ensuring easy handling and secure fixing on site. Perfect for both DIY enthusiasts and trade professionals, these posts are a versatile solution for sturdy structural support.

    Key Features:

    • Pressure-Treated Timber: Built to last, ideal for outdoor decking, pergolas, fences, and posts.
    • Robust Dimensions: 100mm x 100mm x 1.8m, providing strong structural support for medium-to-large projects.
    • Moulded Finish: Smooth, rounded edges for a professional look and easy handling.
    • Durable & Weather-Resistant: Resistant to rot, decay, and insect attack for long-term reliability.
    • Versatile Use: Suitable for deck supports, garden structures, pergolas, and post-and-rail fencing.


    Technical Specifications:

    • Dimensions: 100mm x 100mm x 1.8m
    • Material: Pressure-Treated Softwood
    • Finish: Tan moulded edges
    • Usage: Decking supports, pergolas, fencing, and general 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 sturdy deck or structure, ensure posts are properly seated in concrete footings or post anchors. This prevents movement and increases the lifespan of your build.

    More Information
    BrandTJ O'Mahony
    Weight2.0000
    Provided byNot Assigned
    Delivery Rulelarge & heavy

    Last update: 02-Dec-2025

    Delivery Timeframes:

    • Small Items: 2-3 working days

    • Large/ Bulky items: 5-7 working days

    • Extra Large appliances & TV's: 5-7 working days

    • Click & Collect: 1 working day

     

    Delivery Zones (Nationwide):

    • Zone 1: Dublin, Galway, Kildare, Limerick, Meath, Offaly, Tipperary, Wexford, Wicklow

    • Zone 2: Carlow, Clare, Clifden, Kilkenny, Laois, Louth, Waterford, Westmeath

    • Zone 3: Cavan, Cork, Donegal, Kerry, Leitrim, Longford, Mayo, Monaghan, Roscommon, Sligo

     

    Delivery Charges: 

      Small & Light  Large & bulky Extra Large
     Zone 1  €9.99  €25  €50
    Free delivery on orders over €400 no free delivery
     
     Zone 2  €9.99  €50   €50
     
     Zone 3  €9.99  N/A  N/A

    * Effective from 3 December 2025
    * Free delivery on order over €400, applies to Small & Light, Large & Heavy items within zone 1 only.

     

    Zone Indicator:

    To help you understand delivery availability, every item displays a zone icon, icons appear on the top-right corner of each product image:

    Types  of goods Available zones Descriptions
    Small & light items All Zone area Items under 20kg weight & under 2m long, (some fragile items may not be included e.g. glass/mirrors)
    Large and bulky items
    Extra Large items    		 Zone 1 & 2 only Wet & hazardous bagged, items over 20Kg weight & oversized;
    Euronics white goods, TVs of all sizes.
    Large Paint items (6L / 6L+) Zone 1 only Large hazardous items (6L+) - available for collection

     

    Available zones Indicator Descriptions
    All zone area  ALL Zone delivery icon This icon with all zone area in green, indicates this items can be shipped to all Zone.
    Zone 1 & 2 only  non-zone 3 delivery icon Zone 1 & 2 in green and zone 3 greyed out, indicates this product can only be shipped to Zone 1 and 2 
    Zone 1 only  non-zone 3 delivery icon Zone 1 in green zone 2 and zone 3 are greyed out, indicates this product can only be shipped to Zone 1 only.
     
     

    Old Appliance Collection:

    When you buy a large appliance, we’ll collect your old one for free through WEEE Ireland. Please ensure it is uninstalled, disconnected, and ready for pickup. Collection is like-for-like and takes place at the front door or apartment entrance. Restrictions may apply based on access and item type.

     

    Free Click & Collect:

    Click & Collect is free and available on items in stock at your chosen branch. Click Here to see our Branch Locator.

    How it works:

    • Place your order online

    • You will receive an order confirmation email

    • Our team processes your order, please allow up to 4 hours

    • Within branch opening hours, we aim to have your order ready the same day.

    • You will receive an email once your order is ready for collection. 

    At TJ O'Mahony we will exchange or refund any Retail unused product returned to us in its original condition within 30 days of receiving it (*)You can return any unused product to us in its original condition for a full refund or exchange within  30 days of delivery.  

    This right to return does not apply to products that are non stock and only available to order such as catalogued doors, catalogued bathroomware and mixed paints which are made especially for your order.

    Please note that we are unable to accept returns on certain bagged building products and materials, including (but not limited to) hard wall, cement, bonding, slates, and ridges. We appreciate your understanding and recommend checking product requirements carefully before purchase.

    *View our full returns policy on our Terms &Conditions Page.