Expansion Joint Sealing in Wellow
Expansion and movement joint sealing in walls, decks and floors in Wellow. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Water getting into the wall through a failed joint
- Brittle, chalky sealant on external joints
- Debris jammed in movement joints
Expansion joint sealing across Wellow
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Common questions from Wellow clients
Does a coastal location like Wellow affect which sealant is used?
It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Is Wellow off your patch?
Not at all. Wellow is within our area. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.
Is movement joint sealing guaranteed?
A 12-month guarantee covers our workmanship and we hold public liability insurance. Keeping joints clear of debris helps them last.
Do you seal on top of existing sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Can you seal joints in cold or wet weather?
A wet joint can’t be sealed properly. We agree a revised date with you.
What exactly is a movement joint?
Put simply, it’s a planned break in a wall, slab or deck so the materials can move. Many people call it an expansion joint.
Do you use silicone or polyurethane in movement joints?
Movement capability matters most as set out in BS EN ISO 11600. Where two different materials meet, a hybrid sealant can be the better choice.
Expansion joint sealing in Wellow, done properly
Mastic Doctor has sealed movement joints since 2005 for contractors, facilities managers and owners. Our applicators are CSCS-carded, we’re CHAS accredited and a Constructionline member, and we carry five million pounds of public liability insurance. Workmanship is backed by our 12-month guarantee. We work on podiums and floor movement joints, cladding panel joints and brickwork movement joints, and what we’re called in for most is rain penetration at brick or block movement joints and brittle, chalky sealant on external joints. One point of contact handles commercial sealant work in Wellow from the first photos to the final walk-round, whether it’s one building or several.
For a site near Wellow, measurements and photos up front mean one trip where possible. Note joint widths and the traffic that uses them, and we will take it from there.
Building owners and contractors get the same cover: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Place
- Wellow (PO41)
- Wider area
- Isle of Wight
- Guarantee
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
From enquiry to sign-off
At the end of each section, we remove the tape, clean down and inspect every joint, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. For a building around Wellow, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- First the joints are inspected, widths measured and the type of failure noted.
- A fixed quote names the sealant we propose and its movement class.
- Phasing is agreed so decks, floors or entrances can stay in use where needed.
- The failed seal is cut out and both joint faces cleaned back to sound material.
- Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
- We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.
Before we start on site
- Share your working hours and any access restrictions
- Have the specification and drawings to hand
- Point out parking and an unloading spot
Request a quote
Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or email drawings and photos.
Advice
What the job involves on each surface
Concrete and precast panel joints
Concrete edges can be weak or carry release agents that stop adhesion. We prepare the faces thoroughly and prime where the maker calls for it and check the edges for soundness as we go.
Joints between different materials
Junctions between brick and render, or concrete and cladding, move independently. We choose a sealant that grips both faces priming where the maker calls for it.
Cost factors for movement joints
To price the job, we consider:
- Removal of failed or old sealant
- Phasing around occupants
- The size and state of each joint
- Location, for remote and island sites
A quote for movement joints depends on how many there are, their condition and the access, plus any specification you are working to. Ask us for a fixed quote.
Sending details for a quote
The more we know, the firmer the quote. When you get in touch, include:
- Your programme or deadline
- Approximate linear metres or a joint schedule
- Access details, including height
- The type of building and who uses it
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call 01277 525 020 or email the details over.
What else we do in Wellow
When to bring in a specialist
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
Common problems we fix in Wellow
Sometimes the sealant holds but the substrate breaks away. If the edge of the joint is friable, the bond fails with it so edge repair has to come before resealing.
Look out for the following:
- Layers of sealant in a movement joint
- Car park joints leaking onto vehicles below
- Spalled or broken joint edges in floors and decks
- Expansion joints split through the centre of the bead
In and around Wellow, the right filler or sealant for each joint depends on the traffic and the movement it takes.
Before you book anyone
- What site paperwork they can supply
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Their plan for phasing and protecting the area
- Whether primer will be used where the manufacturer specifies it
Building owners, agents and FMs in Wellow
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Where floor joints take the most wear near Wellow
Wellow lies within about 2 miles of the sea. Coastal yards and decks give their joints salt and wet weather to deal with, not just wheels, and edges left open tend to break up faster. Wellow sits in one of the drier corners of the country, the South East. Even so, yard and car park joints are only sealed when they’re dry and clean, and gritting in cold spells finds its way into open joints.
Schools like Shalfleet Church of England Primary School often have long brick elevations with movement joints that age quietly.
Wellow is about 6 miles south-east of Lymington, in the Isle of Wight. We cover Wellow, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across the Isle of Wight, 125 places are covered, including Wellow. Southampton is covered too, around 16 miles from Wellow.
We take on movement joints across the PO41 postcode area. We also cover Thorley Street (1 mile north-west), Ningwood (1 mile east), Thorley (1 mile north-west), Newbridge (1 mile east) and Shalcombe (1 mile south) for movement joints. Bigger towns within reach include Newport (7 miles east), Ryde (13 miles east), Cowes (8 miles north-east), Sandown (13 miles east), Shanklin (13 miles east) and Ventnor (12 miles south-east). Where a site is remote or on an island, we plan travel and materials carefully, so include the location in your enquiry.
Local landmarks in Wellow
Nearby you’ll also find Calbourne Water Mill And Rural Museum (1.7 miles south-east) and Yarmouth Castle (2.4 miles north-west). For a walk, there’s Lymington and Keyhaven Marshes Nature Reserve and Compton Down.