Hampshire · England
External & façade joints in Frogmore, Hampshire
External mastic for Frogmore, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Rigid filler in a joint that should flex
- Joints with sealant missing in places
- Rain getting behind render or cladding at a joint
About our external mastic in Frogmore
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We work on joints between brick and frames, brickwork movement joints and concrete & block, and people most often call us about weeds or debris growing in open joints and movement joints filled with mortar instead of sealant.
Houses in smaller places like Frogmore can stand more in the open than those in a built-up town, and walls and rooflines facing the weather take the worst of it. That is where gutter joints and wall joints tend to fail first.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Place
- Frogmore (GU17, GU47, GU46)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Aftercare tips
After the cure time, these simple habits help:
- Have failed joints looked at early
- Clear growth from the base of walls and joints
- Walk round the building once a year and look at the joints
- Keep high-pressure jets off the joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Towns and villages near Frogmore
More services for Frogmore
What happens on the day
Before we leave, we go over the finished joints with you. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on how much there is to do. In a smaller place like Frogmore, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for 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.
Preparing for the visit
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Advice
Outside joints around Frogmore
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.
Schools such as Frogmore Junior School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Sandhurst station? Then split movement joints are easy to miss on a rental until damp shows inside.
Frogmore is about 1 mile south-west of Sandhurst, in Hampshire. Our applicators cover external mastic for homeowners, landlords and businesses in Frogmore, as part of our work across Hampshire. Frogmore is one of 683 towns and villages in Hampshire where we work for external mastic. There’s also a page for Reading, about 11 miles away.
Postcode districts we cover here for external mastic: GU17, GU47 and GU46. If you need external mastic at a property on Bell Lane, Green Lane and Reading Road or anywhere close by, our applicators can take on the job. If you’re just outside Frogmore, we cover Blackwater (1 mile east), Hawley (1 mile south-east), College Town (1 mile north-east), Sandhurst (1 mile north-east) and York Town (2 miles east). Larger places within reach include Basingstoke (14 miles west), Farnborough (3 miles south-east), Fleet (5 miles south-west), Aldershot (6 miles south), Alton (15 miles south-west) and Tadley (15 miles west).
Around Frogmore
Locally, jobs take us to homes and businesses close to White Swan pub, Frogmore Community College and Sandhurst Memorial Park, among other places. The closest station to Frogmore is Sandhurst station, roughly 0.8 miles north. Nearby you’ll also find Staff College Museum (2.1 miles east) and Frimley Park Hospital (2.6 miles south-east). Not far away are Horseshoe Lake and Wildmoor Heath.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
If you manage several properties in or around Frogmore, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
What sealant work can’t fix
Before booking, it’s worth knowing the limits:
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
- Adding movement joints to masonry that has none
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
What we seal
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Façade panels
Surface by surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that’s happened, we rake it out and reseal it properly where it can be done safely.
When to call us in Frogmore
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Signs it’s time to call us include:
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
If you live in an older home near St Barnabas Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- How hidden problems are handled
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
- Are they insured?
Your questions about external mastic in Frogmore
Do you work for landlords with property near Sandhurst station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover Frogmore for external mastic?
Yes, Frogmore is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months, wherever you are.
Do you work at height?
Each building is different. Tell us the height, the number of joints and what’s below them, and we will confirm what access is needed.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.