A reliable hardware store

Need tools and materials for a DIY project? Get in touch with us at A. Diamond & Son. We supply tools and hardware in Coleraine and across Northern Ireland.

All the hardware tools you need

Whether you want to install a gate, an arbour or a new fence for your garden, A. Diamond & Son can provide you with the tools and hardware you need. Our products are simple to put together.  So, if you would like to try your hand at a DIY project, we are here to offer you the advice and tools you need, from saws and screws to garden tools.


Check out the range below including high performance, durable black gate hardware.


Get in touch with us for more information on our services. We also supply roof shingles , wood preservatives , firewood and garden structures to our customers.

materials for your project

 Want to install gates, doors or decking on your property? We can help. We stock an extensive range of hardware and galvanised fixings , including easypost, hand tools, power tools and components. Our range of brands includes:

Walther Strong Post Tape is engineered to protect timber fence and gate posts at their most vulnerable point: just above and just below ground level. This critical zone is where moisture retention, fungal attack, and rot are most likely to occur, significantly reducing the lifespan of posts if left unprotected.


Using a specialist non-butyl, polymer based adhesive, Post Tape forms a durable, waterproof seal that blocks moisture, oxygen, and UV exposure. The adhesive penetrates into the timber and cures over time, creating long lasting protection without cracking, peeling, or degrading.

Suitable for both treated and untreated timber, Post Tape works alongside all chemical and non-chemical wood treatments without compromising performance. It remains flexible, UV stable, and effective in harsh outdoor environments, making it ideal for long-term ground contact protection.


Designed for practical, on-site use, Post Tape tears cleanly by hand, requires no tools, and can be applied to damp timber or in cold conditions. During installation, it can be repositioned easily before forming a permanent bond, ensuring accurate placement every time.


By sealing posts at the primary points of decay, Walther Strong Post Tape significantly extends the service life of timber fencing and gate installations, reducing maintenance, replacement costs, and premature failure.


  • Shields posts, deck joists and frames from moisture, rot, and weathering
  • Forms a watertight, airtight, and weatherproof seal
  • Can be used with round, square & steel posts
  • 25 year bond guarantee
  • Self seals around fixings, closing potential moisture entry points

Description Title

Deck Tape

  • 50mm x 20m
  • 100mm x 20m
  • 50mm x 50m

Post Tape

  • 100mm x 20m
  • 150mm x 20m
  • 200m x 20m
  • Can also be bought by the metre

  • Protects hard to tape timber details against moisture, rot and weathering
  • Designed to complement pressure treatment with long lasting surface protection
  • Fills gaps that Deck Tape struggles to reach, boosting overall timber durability
  • Quick application with brush or roller, no specialist tools required
  • Rubberised waterproof coating, seals timber efficiently without multiple layers

Description Title

  • 1KG
  • 4KG

Range of nails, screw, galvanised bolts, gate fixings and fencing tools

Fence Posts Brackets

View more

  • Bolt down brackets
  • Drive in post holders
  • Concrete in brackets
  • Wallmount brackets
  • Repair Spurs

Post Caps & Finials

Various post caps and finials for 4" and 3" posts

Decking Accessories

  • 24mm Polyhemp Rope
  • 24mm rope end accessories
  • Anti-slip plates

Advanced Hardware

Stainless Steel, epoxy black coating

  • Strong Tee Hinge
  • Ring Latch
  • Pull Handle
  • Suffolk Latch
  • Cabin Hook
  • Brenton Padbolt
  • Adj Band & Hook Set

Gate Hardware & Accessories

View more

  • Scotch Tee Hinges
  • Cranked Band Hinges
  • Butt Hinges
  • Brenton Bolt
  • Oval Latches;  Auto Catches; Suffolk latches
  • Cabin Hooks
  • Spring Return Closures

Field Gate Accessories

  • Adjustable hinge sets - drive in and hook on plate
  • Throw Over Loops and Drop Bars
  • Shoot Bolts
  • Spring Fastner Staple Catch
  • Gravity Catch
  • Gate Wheels

Accessories

  • Gate Sign
  • Gate numbers
  • Gate pull handles
  • Turn Button Latch
  • Long Throw Latches
  • Carbine Hooks, saftey hook and eye
  • 2m lengths straight link chain

Fencing Tools

  • Post Hole Diggers
  • Fencers Excavator
  • Post Level Vials
  • Pro Levels
  • Post Rammers

Screws & Bolts

  • Galvanised Nails, clouts & staples
  • Premium Deck Screws
  • Express Nails
  • Flange Head ThunderboltsSquare Cup Galvanised Bolts
  • Hex Head Timber Fastners
  • Coach Screws
  • Threaded bar and Nuts & washers

Site Accessories

  • Poly rope
  • Ratchet Straps
  • Driver bits
  • Joist Hangars
  • Trellis and panel clips
  • Balustrade Brackets

Auger & Flat Wood Bits

  • 4 Tip Fast Augaer Bit
  • Hex Shank Auger Bit
  • Flat Wood Bit

Drill Bits

  • Ground Jobber Drill Bit
  • SDS Speedster Drill Bit
  • Premium Plus Masonry Drill Bit
  • Brad Point Drill Bit

Drill Bits

  • Multi purpose woodscrew
  • Self Drilling no pilot hole needed
  • Capable of penetrating 0.8mm steel
  • Salt spray tested
  • Torx compatible insert. Free Torx bit with box

ForgeFast Self-Drilling Screw

KTX Bronze is an internal/external woodscrew available in a range of sizes that fits in less than half the time of a normal woodscrew and provides a super sooth finish in timber.

KTX Bronze Premium Professional Woodscrews

The screws have a nano-coating which has been salt spray tested beyond 2000 hours and have a C4 European rated coating guaranteeing at a minimum 15 years in timber externally.  The screws are ideal for decking, fencing and other external uses and particularly blend in well with timber.

KTX bits accompany all boxes and tubs for free.  They are 50mm in length which makes them ideal for use in impact drivers as well as drill/drivers.

K Post

K Post a premium rapid setting concrete for securing metal, wood and concrete posts.


K Post is ready mixed and requires only the addition of water and mixing prior to use. It sets in just 5-10 minutes and is supplied in 20kg shower-proof eco friendly bags.

Description Title

  • Dig a hole to the desired size, position the post in the hole then fill halfway with water.
  • Pour K Post evenly around the post, filling the hole.
  • Tap the setting surface to remove any air bubbles and cover with soil. K Post will set in 5 to 10 minutes.

FloMix Post Mix & 40N

A quick setting concrete mix designed especially for the installation on anchoring for all types of timber, plastic, metal and concrete post.


Post mix offers many advantages with the final set in just 10 minutes increasing site productivity.


There is no mixing required meaning this is a convenient and easy use product.

Advantages for choosing the 40N concrete 

  • Rapid setting allowing early traffic
  • Rapid strength development 
  • Use used when rapid setting and rapid strength are required.

It is ideal for the installation of post, fence and sign work along with footpaths and driveways etc. 

 "A well organized company both with pricing and collection"
- John Montgomery, Google

get in touch

We can supply hardware for your installation project.
Get in touch with us for more details.
Tel: 028 7034 3452
Telephone: 028 7034 3452
Address: 35 Newmills Rd, Coleraine, BT52 2JB
Areas we serve