Isle of Wight · England
External & façade joints in Northwood, Isle of Wight
Sealing brickwork movement joints, render, cladding and façade joints for Northwood, backed by a one-year guarantee. Call for a quick quote.
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
- Sealant that has lost its bond to the brick or render
External mastic in Northwood, done properly
On houses, flats and commercial buildings across Northwood, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you’re dealing with rigid filler in a joint that should flex and gaps where render, brick and frames meet, we can put it right, on copings & trims, joints between brick and frames and façade panels alike.
External sealant needs dry, clean surfaces, so work around Northwood is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Where
- Northwood (PO31)
- Wider area
- Isle of Wight
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Damp that isn’t coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Façade panels
- Brickwork movement joints
Nearby places to Northwood
More services for Northwood
Walls and rooflines in Northwood
Northwood is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Northwood Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Northwood is about 1 mile south of Cowes, in the Isle of Wight. Our applicators cover external mastic for homes and businesses in Northwood, as part of our work across the Isle of Wight. 125 places in the Isle of Wight are on our list. Portsmouth is on our list too, about 11 miles from Northwood.
Here we cover the PO31 postcode area for external mastic. We cover properties on Nodes Road, Wyatts Lane and Uplands Road. We also cover the places around Northwood: Rew Street (1 mile west), Gurnard (1 mile north), Cowes (1 mile north), Noke Common (2 miles south) and Parkhurst (2 miles south). Within a short drive, we also cover Newport (3 miles south), Ryde (7 miles east), Sandown (9 miles south-east), Shanklin (10 miles south-east), Ventnor (11 miles south-east) and Oakfield (7 miles east). For island and remote addresses, the job takes a little more planning, so let us know when you get in touch.
Around Northwood
Typical jobs here are in homes near Cowes Enterprise College and The Travellers Joy pub and the streets around them. A little further out are Isle of Wight Natural History Centre (0.5 miles north) and West Cowes Castle (1.7 miles north). Not far away are Mill Hill and Briddlesford Nature Reserve.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
Signs you need external mastic in Northwood
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
The most common problems we see are:
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
Homes close to All Saints' Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- Who turns up on the day
- What happens if they find a problem under the old sealant
- What preparation is included
- Whether all the old sealant comes out first
How to look after the new joints
To keep the joints looking good and working properly:
- Keep movement joints as flexible joints, not mortar
- Deal with leaking gutters that soak the joints below
- Show decorators and builders where the movement joints are
- Get split or bare joints resealed while the damage is small
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
FAQs for Northwood
Do you cover smaller places like Northwood?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Does living near the coast affect external mastic in Northwood?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected.
What colours does the sealant come in?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. Exterior sealants come in a good range of colours.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or email us.
How the job changes by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. The sealant is chosen with that in mind.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it and keep the sealant to the right depth.
Quotes for external mastic in Northwood
Every job gets its own quote. These are the things that affect it:
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
- Whether there’s mould to deal with
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
What to tell us for a quote
When you call or email, these details help:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- The rough size of the job
- Photos by email, if that is easy
Need a quote? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
What we do, step by step
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Northwood, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
Get a quote
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details and send photos if you have them.