Hampshire · England
Woolmer External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Woolmer and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
How we handle external mastic in Woolmer
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you have rain getting behind render or cladding at a joint and joints pointed up with cement by mistake, we can put it right, whatever the surface.
Outside joints can only be sealed when they’re dry, so work in Woolmer is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Whatever the size of the job, it’s backed by our 12-month guarantee in Woolmer and across Hampshire.
- Place
- Woolmer (GU33)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Concrete and blockwork
Concrete faces can be dusty and porous, so cleaning and priming matter. We prime where the sealant needs it before the bead.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible in all weathers.
How it works
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. The work generally takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Woolmer, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Let us know about parking restrictions
- Mention any leaks or damp you’ve noticed
- Let us know about stairs, lifts or work at height
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Related advice
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Landlords, agents and businesses in Woolmer
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Leave it or put it right?
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Around Woolmer, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why us?
- We are fully insured
- A choice of colours where the product allows
- More than 20 years in sealant work
- Neat joints and a tidy finish
What external mastic looks like in Woolmer
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Liss station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. For site and facilities teams at buildings such as St Matthew's Church of England Aided Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Woolmer is about 2 miles south of Bordon, in Hampshire. Jobs in Woolmer get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Hampshire, we cover 683 places, Woolmer among them. There’s also a page for Portsmouth, roughly 21 miles from Woolmer.
Postcode districts we cover here for external mastic: GU33. Whether your property is on Benhams Lane and Petersfield Road or a nearby road, we can help. Other places close to Woolmer include Greatham (1 mile south), Blackmoor (1 mile north-west), Longmoor (1 mile south-east), Weavers Down (2 miles east) and Liss Forest (2 miles south). Within a short drive, we also cover Farnborough (15 miles north), Fleet (13 miles north), Horndean (13 miles south-west), Aldershot (12 miles north-east), Alton (6 miles north-west) and Waterlooville (15 miles south-west).
What’s near Woolmer
In Woolmer, that means homes and buildings near Mill Chase Academy. For rail, the closest station is Liss station, roughly 2.8 miles south of the centre. Nearby you will also find Chase Community Hospital (1.7 miles north-east) and The Romany Museum (2.8 miles west). For a walk, there’s Deadwater Valley and Selborne Hill.
Places near Woolmer
Also in Woolmer
What we are called out for in Woolmer
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint cannot move, so the wall cracks somewhere else instead.
It’s worth asking for a quote if you see:
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
If you live in an older home near St Matthew's 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 the colour is chosen
- What happens if the job turns out different
- Which sealant they’ll use, and why
- How the joint is cleaned and prepared
How to look after the new joints
Aftercare is simple:
- Keep soil, plants and ivy away from the joints
- Leave the joints unpainted unless we have said otherwise
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at 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 must stay as flexible joints, never rendered or pointed over.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Your questions about external mastic in Woolmer
Is Woolmer within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Woolmer?
Yes, Woolmer is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in.
Can you do several jobs on one visit?
Yes, we can. More than one area can go on one quote.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or send us an email.
Is there a guarantee?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we will sort it.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.