Mastic Sealing in Blackmoor
Mastic sealing for building owners, managing agents and housing associations in Blackmoor and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Movement joints with sealant missing
- Draughts at frames across a block
- Brittle perimeter mastic across a building
Mastic sealing across Blackmoor
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Blackmoor: questions and answers
Is Blackmoor too small for you to travel to?
No. Places such as Blackmoor are covered as much as the big towns. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.
Can you quote for a block close to Liss station?
Yes, and several blocks can go on one quote. Give us the building’s details and say how residents are notified, and we will quote and plan to suit.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.
Can weather delay the job?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
What guarantee do you give on resealing?
A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Do you seal on top of existing sealant?
No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
About our mastic sealing in Blackmoor
In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey and if it’s suspected, work stops until it’s tested. Removing asbestos-containing material isn’t something we do. We work on window and door perimeters on blocks, external wall and movement joints and balcony and threshold joints, and the failures we are asked to look at most are draughts at frames across a block and cracked, hardened mastic round windows on a block. Facilities teams, main contractors and managing agents in Blackmoor tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In and around smaller places like Blackmoor, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.
A 12-month guarantee applies to all our work in Hampshire. If an installation problem shows up, ring 01277 525 020 or email us and we will arrange a return visit.
- Place
- Blackmoor (GU33)
- Region
- Hampshire
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Common problems we fix in Blackmoor
The edges of the material itself sometimes break away, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.
Most enquiries start with one or more of the following:
- Worn sealant at communal door frames
- Occupiers reporting cold air round windows
- Complaints coming in block by block
- Open joints in brickwork or panels
For a school such as St Matthew's Church of England Aided Primary School, perimeter mastic on windows and doors is a holiday job.
What your quote should include
- How the existing material will be dealt with
- Who will actually carry out the work
- Proof of insurance
- How the joint faces will be prepared and primed
Other services in Blackmoor
Mastic sealing around Blackmoor: how the place shapes the job
The South East is one of the drier parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, while the elevations that take the most sun tend to show hardened mastic first. Blackmoor is about 44 miles from central London. Within reach of London, blocks run by agents and associations are common around stations.
For owners of several units at places like Southlands Industrial Park, which lies north-west of Blackmoor, one programme can deal with frame and external mastic across the lot. Older community buildings, St Matthew's Church among them, often have frames of mixed ages whose mastic varies.
Blackmoor is about 5 miles south-east of Alton, in Hampshire. If you are looking for mastic sealing in Blackmoor, we can help, as we do across Hampshire. 723 places across Hampshire fall within our area, including Blackmoor. There’s a separate page for Portsmouth, roughly 21 miles from Blackmoor.
Business premises anywhere in GU33 are within our area. We cover commercial and managed buildings on Blackmoor Road and Sotherington Lane and the roads nearby. Sites close to Blackmoor are covered too, including Woolmer (1 mile south-east), Greatham (1 mile south), Longmoor (2 miles south-east), Passfield (2 miles east) and Weavers Down (3 miles south-east). Bigger towns within reach include Basingstoke (15 miles north-west), Farnborough (15 miles north), Fleet (13 miles north), Horndean (14 miles south-west), Aldershot (12 miles north-east) and Alton (5 miles north-west).
Around Blackmoor
In Blackmoor, that means premises near Mill Chase Academy. Blackmoor’s nearest station is Liss station, roughly 3.5 miles south. Nearby you’ll also find The Romany Museum (2.3 miles west) and Chase Community Hospital (1.4 miles north-east). The countryside around Blackmoor includes Selborne Hill and Deadwater Valley.
General trades versus a specialist
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.
Why it’s worth doing now in Blackmoor
Open external joints let water into walls and around frames. Damp patches, stained plaster and decorating claims can follow and those cost far more to put right. One visit to deal with every failing joint makes more sense than several trips to a place like Blackmoor. Send photographs of each area and we’ll quote for the lot.
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Why appoint us
- CHAS accredited contractor
- One contact handling all your sites
- Failed material removed, not covered up
- A fixed quote before work starts
Read our cost guide or our accreditations.
Commercial clients in Blackmoor
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.
Our process
Working in a building that stays open takes some planning. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. Rural sites near Blackmoor may need directions, gate codes or a contact on site. Send that with the details and we’ll confirm the plan with the quote.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Explain the parking and delivery arrangements
- Point out any areas we must not close
- Send any specification or drawings in advance
Get a fixed quote
For a fixed quote, call the office on 01277 525 020 or email us. Our quote form is another easy route.
Related advice
What we can’t put right
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Substrate edges that need repairing first
- Failed window or door frames, which need a window contractor
- Glazing that needs replacing
If in doubt, ring 01277 525 020 or send photos by email and we’ll say what we think before you book.
Where we work in Blackmoor
- Balcony and threshold joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
- External wall and movement joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks