West Berkshire · England
Woodlands St Mary External Mastic
We cover Woodlands St Mary for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Joints pointed up with cement by mistake
- Weeds or debris growing in open joints
- Cracked joints where brick meets render or frames
External mastic in Woodlands St Mary
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. We’re often asked to deal with weathered mastic that no longer stretches and leaking joints around cladding and façade panels, across façade panels, copings & trims and brickwork movement joints.
External sealant needs dry, clean surfaces, so work around Woodlands St Mary is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Where
- Woodlands St Mary (RG17)
- Region
- West Berkshire
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Tell anyone working on the walls about the movement joints
- Make sure movement joints are not pointed over
- Get split or bare joints resealed while the damage is small
- Keep high-pressure jets off the joints
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Older cottages and farmhouses around Woodlands St Mary can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why us?
- Neat joints and a tidy finish
- We’re fully insured
- Colour picked to suit the job
- 20+ years of sealant experience
See our cost guide and our reviews.
Questions from Woodlands St Mary
Do you cover smaller places like Woodlands St Mary?
Yes, Woodlands St Mary is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Hungerford station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that normally means someone at home.
Will the new joint stand out?
We choose a sealant colour to suit the brick, stone or render. There’s a wide choice of exterior colours.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Look for splits, hardening or edges coming away.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
External mastic in Woodlands St Mary: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Hungerford station, split movement joints are easy to miss on a rental until damp shows inside.
Woodlands St Mary is about 9 miles south-west of Wantage, in West Berkshire. Wherever you are in the RG17 postcode area, we can carry out external mastic at your property. Our area takes in 155 places across West Berkshire, large and small. For nearby work, see our Reading page.
Postcode districts we cover here for external mastic: RG17. Whether your property is on Ermin Street and Stony Lane or anywhere close by, our applicators can take on the job. Nearby, we also carry out external mastic in Lambourn Woodlands (1 mile north-west), Chilton Foliat (3 miles south), Leverton (3 miles south), Upper Eddington (3 miles south) and Eddington (4 miles south). Further out, we also cover Newbury (10 miles south-east), Thatcham (12 miles south-east), Speenhamland (9 miles south-east), Lambourn (3 miles north), Shaw (10 miles south-east) and Kingsclere (15 miles south-east).
Local landmarks in Woodlands St Mary
The closest station to Woodlands St Mary is Hungerford station, roughly 3.9 miles south. For a walk, there’s Watts Bank.
Surface by surface
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
How it works
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Woodlands St Mary, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
How to get a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
Related advice
Do you need external mastic in Woodlands St Mary?
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Keep an eye out for any of the following:
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
Homes close to St Mary's Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- What the quote includes, VAT included or not
- Which colour the sealant will be
- Whether they seal over old material or remove it
- Whether they’re fully insured
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.