Tongue and Groove OSB3 Flooring Boards
SKU: 22180769424

Tongue and Groove OSB3 Flooring Boards

$15.03 $16.70
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

Tongue and Groove OSB3 Flooring BoardsTongue and groove OSB3 flooring boards provide a structural, load bearing sheet solution for subfloors, loft boarding, roofing decks and wall sheathing. The interlocking T&G profile creates a tight, level surface between sheets, and factory sealed edges help control moisture ingress. Available in 18mm thickness at 600mm x 2440mm. Specifications Material Oriented strand board (OSB) Grade OSB3 structural use in humid conditions Profile Tongue and groove

Tongue and groove OSB3 flooring boards provide a structural, load-bearing sheet solution for subfloors, loft boarding, roofing decks and wall sheathing. The interlocking T&G profile creates a tight, level surface between sheets, and factory-sealed edges help control moisture ingress. Available in 18mm thickness at 600mm x 2440mm.

Specifications

Material Oriented strand board (OSB)
Grade OSB3 - structural use in humid conditions
Profile Tongue and groove (T&G) long edges
Nominal Size 18mm (3/4 inch) x 600mm x 2440mm
Finish Factory-sealed edges
Use Class Structural - humid/load-bearing applications

What it's used for

  • Subfloor decking on timber joists in new builds and refurbishments
  • Loft boarding to create usable storage space over ceiling joists
  • Flat roofing decks as a structural sarking layer beneath the waterproof finish
  • Wall and ceiling sheathing where a structural panel with moisture resistance is required

Fitting and handling

Allow boards to acclimatise in the installation area for at least 24 hours before laying, particularly in loft or ground-floor subfloor situations where temperature and humidity can vary. Fix through the face into joists at 150mm centres around the perimeter and 300mm centres internally, using ring-shank nails or screws appropriate for the joist depth. Leave a 3mm expansion gap at walls and perimeter edges to allow for seasonal movement.

FAQ

What is the difference between OSB2 and OSB3 flooring boards?

OSB3 is rated for structural use in humid conditions under EN 300, whereas OSB2 is only suitable for dry interior conditions. For subfloors, loft boarding or roofing decks where moisture exposure is possible, OSB3 is the appropriate choice and is widely specified by UK building regulations and warranties.

Can T&G OSB3 be used as a finished floor surface?

OSB3 tongue and groove boards are intended as a structural subfloor rather than a decorative finish. They are designed to receive floor coverings such as carpet, vinyl, ceramic tiles (with suitable adhesive) or engineered flooring. The surface texture is not suitable as a standalone wear layer in occupied spaces.

What joist spacing is 18mm OSB3 rated for?

18mm OSB3 T&G flooring boards are generally suitable for joist centres up to 600mm, which aligns with the 600mm board width so joints always fall on a support. For spans up to 450mm centres the boards perform well under standard domestic loading. Always confirm with your structural requirements and local building control where applicable.

Nottage Timber Merchants hold T&G OSB3 flooring boards in stock at our Bridgend yard, with delivery available throughout South Wales. Browse our full range of subfloor and loft boards for complementary sheet materials, or contact the yard for volume pricing and next-day delivery options across the Bridgend area.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22180769424

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4.9 ★★★★★
Based on 170 reviews
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Product Reviews
A
Verified Purchase
Aimee C.
Whiting, US
★★★★★ 4
Perfect size and weight with compact size
Style: Rack with 3 Pairs (3, 5, and 8 Pound)
I purchased the Amazon Basics Neoprene Dumbbell Hand Weights specifically for Pilates, and they’ve been a great addition to my routine. The size and weight are perfect for controlled movements, helping with muscle toning without feeling too bulky or awkward. The neoprene coating gives them a comfortable, non-slip grip, which is especially important during longer sessions or when your hands get a little sweaty. They feel secure and easy to hold through a full workout. I also like the shape—they don’t roll around on the floor, which makes transitions between exercises smoother and less frustrating. They’re compact enough to store easily but still feel durable and well-made. Overall, these are a simple, affordable, and effective option for Pilates or light strength training. I’d definitely recommend them for anyone looking to add a little resistance to their workouts without overcomplicating things.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
J
Verified Purchase
J. saroukhan
Pawtucket, US
★★★★★ 5
Well made , gym quality
Style: 10 Pound, Pair
Color is nice and bright . The weights grips are good they do not slip . Prices reflect quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Verified Purchase
Kim Wood
Charlottesville, US
★★★★★ 5
Good purchase
Style: 3 Pound, Pair
These are just the right weight for me to start gaining muscle back in my arms, after a large weight loss. They are of good quality, they are covered in a nice rubber like coating that is soft to the touch. They are small enough that i can take them with me when I travel. My dog has got hold of them a couple times and played with them, and they held up just fine without any damage.
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Reviewed in the United States on April 28, 2026
K
Verified Purchase
Ky Mogg
Belleville, US
★★★★★ 5
Solid, grippy, and they don’t roll away!
Style: 10 Pound, Pair
I bought these because I’m finally trying to build a consistent home workout routine and didn't want to drop a fortune on name-brand weights. I’ve been using this 10lb pair for about a month now for everything from overhead presses to lunges, and honestly, they’re exactly what I was looking for. The Pros: • That Neoprene Grip: The coating is fantastic. Even when my hands get pretty sweaty halfway through a workout, I don’t feel like I’m going to drop them. It’s a much "softer" feel than cold metal or hard plastic. • The Hex Shape: This is a small detail that makes a huge difference. Since the ends are hexagonal, they don't roll across the floor when I set them down between sets. They also stay put if I’m using them for "renegade rows" or floor work. • Compact Size: They aren’t bulky. I can easily shove them under my bed or in the corner of the closet when I’m done. • No Weird Odor: I was worried they might smell like a tire factory (which happens with some rubber-coated weights), but these had almost no scent right out of the box. The Cons: • Handle Diameter: The handles are a little on the thicker side. I have medium-sized hands and it’s fine, but if you have very small hands, they might feel a bit chunky to wrap your fingers all the way around. • Color Scuffs: The navy blue looks great, but if you clank them together or drop them on concrete, the coating can scuff or show dust pretty easily. The Verdict: If you just need a reliable set of weights for HIIT, Pilates, or general strength training, these are a no-brainer. You're basically getting gym-quality equipment for a fraction of the price. I’ll probably be back for the 15lb set in a few months!
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Reviewed in the United States on January 27, 2026
M
Verified Purchase
Matt
Belleville, US
★★★★★ 5
Simple, Comfortable, and Exactly What You Expect
Style: Rack with 3 Pairs (5, 10, and 15 Pound)
These are pretty much exactly what you want from a set of dumbbells — simple, functional, and no nonsense. The neoprene coating gives them a comfortable grip and keeps them from feeling slick in your hands, especially during longer workouts or if your hands get sweaty. The coating also helps keep them from banging up floors or making as much noise compared to bare metal weights, which is nice if you’re working out at home. Weight accuracy seems fine for general fitness use, and they’ve worked great for things like accessory movements, shoulder work, lighter presses, rehab-style exercises, and general muscle toning. The shape also helps keep them from rolling around everywhere when set down. They’re not fancy, and they’re not trying to be — they’re just dependable dumbbells that do what they’re supposed to do at a fair price. If you want straightforward hand weights for home workouts without overthinking it, these are a solid buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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