Hampshire · England
External & façade joints in Baybridge, Hampshire
We cover Baybridge for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Sealant pulling away from one side of the joint
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
Signs you need external mastic in Baybridge
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Look out for these signs:
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
- Rigid filler in a joint that should flex
- Movement joints with cracked, split or missing sealant
Schools such as Owslebury Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
- How long to leave it before use
- What preparation is included
External mastic for homes and businesses in Baybridge
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing. If you are dealing with plants rooting in failed movement joints and rigid filler in a joint that should flex, we can put it right, on joints between brick and frames, concrete & block and render & cladding joints alike.
Around Baybridge, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Your job is guaranteed for a year, as with all our work.
- Place
- Baybridge (SO21)
- Region
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Baybridge
Other services in Baybridge
The process
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes anything from a few hours to several days, depending on the building, depending on the amount of work. Somewhere as small as Baybridge, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and send you a clear quote before work begins.
Read more
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Deal with leaking gutters that soak the joints below
- Walk round the building once a year and look at the joints
- Ask before painting over external sealant
- Get split or bare joints resealed while the damage is small
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Baybridge: your questions answered
Is Baybridge in your area for external mastic?
Yes. We work across London and the South East, and Baybridge is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Do you cover smaller places like Baybridge?
Yes. Baybridge is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
How much does external mastic cost in Baybridge?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall. There’s a wide choice of exterior colours.
Can you do several jobs on one visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
What we can’t put right
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
- Cracks in the bricks or render themselves, away from the joints
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
For landlords and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
For anyone letting property in or around Baybridge, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
What happens if it’s left?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Older cottages and farmhouses around Baybridge can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why Baybridge clients choose us
- Over 20 years’ experience
- Any old sealant cut out fully, not covered over
- White, clear, grey or coloured to suit, where the product allows
- Approved under the ARBOMaster scheme
See our cost guide or what customers say.
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Outside joints around Baybridge
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Andrew, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Shawford station? Then split movement joints are easy to miss on a rental until damp shows inside.
Baybridge is about 5 miles south-east of Winchester, in Hampshire. Whether you are in the middle of Baybridge or further out, we cover external mastic for every kind of property. Our area takes in 683 places across Hampshire, large and small. Our Southampton page covers work nearby (9 miles or so).
Work in SO21 works the same way as everywhere else we cover. Neighbouring places we cover for external mastic include Owslebury (1 mile north-west), Owslebury Bottom (1 mile north-west), Hensting (2 miles west), Morestead (2 miles north-west) and Lane End (2 miles north-east). Larger places within reach include Winchester (5 miles north-west), Gosport (14 miles south), Havant (15 miles south-east), Eastleigh (5 miles south-west), Fareham (11 miles south) and Horndean (12 miles south-east).
Near you in Baybridge
Around Baybridge, our work takes us to homes and buildings near Ship Inn. The closest station to Baybridge is Shawford station, roughly 3.5 miles west of the centre. Nearby you’ll also find St John's Rooms And Chapel (4.7 miles north-west) and Bishop's Waltham Museum (3.8 miles south-east). Not far away are Twyford Down and Hockley Meadows.