Mastic sealing for building owners and managing agents in Greatham, Hampshire
Mastic sealing for building owners, managing agents and housing associations throughout Greatham and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.
- A mix of products and colours from past repairs
- Mastic failing across several blocks on an estate
- Brittle perimeter mastic across a building
Mastic sealing across Greatham
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Mastic sealing in Greatham, done properly
On a residential block, the work happens around people’s lives. Dates, areas and the order of work are agreed with you in advance so you can let residents know what is happening. Entrances and stairwells are kept in use throughout. Site teams most often ask us about draught complaints from residents or tenants and movement joints with sealant missing, on balcony and threshold joints, shopfronts below residential blocks and communal entrances and stairwells. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Greatham, that means joint design, primers and backing rod as standard.
Around smaller places like Greatham, older walls fitted with newer windows are a familiar sight. The mastic needs to suit an irregular masonry face and the look of the building.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Where
- Greatham (GU33)
- Region
- Hampshire
- Cover
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
When something else is needed
A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be one of these:
- Leaks from above rather than through a joint
- Materials that need asbestos testing before work
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
If you’re not sure, just speak to us on 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.
Joints and surfaces we work on
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
- Window and door perimeters on blocks
Why it’s worth doing now in Greatham
Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure with less control over timing. Around Greatham, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.
There’s no price list, because the scope varies so much from one building to the next. Call for a quote.
Why appoint us
- A Constructionline member, so easy to vet
- One phone line for London, the South East and Scotland
- Products installed to the manufacturer’s instructions
- Workmanship guaranteed for 12 months
See how commercial sealant jobs are priced or our accreditations.
Towns and villages near Greatham
Also in Greatham
Block-wide mastic in Greatham
Greatham lies roughly 45 miles out from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.
If your remit includes a building such as Greatham Primary School, frame and door mastic can be programmed for the holidays. Buildings close to stations like Liss station, 2 miles to the south of Greatham, are often flats over shops, with frame mastic to keep sound.
Greatham is about 5 miles north-east of Petersfield, in Hampshire. Any commercial site in Greatham is covered. Greatham is one of 723 places we cover in Hampshire for mastic joints. For work in that direction, see our Portsmouth page.
We take on mastic joints across the GU33 postcode area, whatever the building. Buildings on Longmoor Road, Wolfmere Lane and Todmore are within our area for mastic joints. We also cover Longmoor (1 mile east), Woolmer (1 mile north), Liss Forest (1 mile south), Blackmoor (1 mile north) and The Mint (2 miles south) for mastic joints. Further afield, our area takes in Havant (15 miles south), Fleet (14 miles north), Horndean (13 miles south-west), Aldershot (13 miles north-east), Alton (7 miles north-west) and Waterlooville (15 miles south-west).
Near you in Greatham
Greatham’s nearest station is Liss station, roughly 2 miles south of the centre. Nearby you will also find The Romany Museum (2.9 miles north-west) and Chase Community Hospital (2.5 miles north-east). The countryside around Greatham includes Liss Riverside Railway Walk North and Selborne Hill.
What the job involves on each surface
External movement joints
Failed sealant is removed, backing rod inserted to control depth and the joint resealed with a grade whose movement class fits.
Commercial and mixed-use buildings
Commercial occupiers typically stay open during the work, so we plan around them.
How a job runs
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. For work around Greatham, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.
- First we look at the mastic on each building and note what needs replacing.
- We send a fixed quote that sets out the joints, the products and the programme.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
Before we start on site
- Tell us what induction or permit system the site runs
- Tell staff and tenants when we’ll be in
- Move anything stored against the joints
Getting a fixed quote
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.
Advice
Common problems we fix in Greatham
Occasionally the substrate fails, not the sealant, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.
Common reasons buildings call us in:
- Cracked, hardened mastic round windows on a block
- Worn sealant at communal door frames
- Occupiers reporting cold air round windows
- Water getting in round frames after rain
Landlords with units on estates such as Longmoor Enterprise Park, under half a mile to the north-east of Greatham, can bring frame, door and external mastic across several units into one programme.
Comparing quotes
- How joint depth will be controlled
- Will failed sealant be removed rather than covered?
- What the guarantee covers, and for how long
- Which product they’ll use, and why it suits the joint
Commercial clients in Greatham
Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.
Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first.
FAQs: Greatham
Can you work at a site such as Longmoor Enterprise Park, by Greatham?
Yes. We cover Greatham and the area around it, including industrial estates, business parks and retail parks such as Longmoor Enterprise Park. A few photographs and the unit address let us price the work.
Will you take on a block within reach of Liss station?
Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.
Will residents or tenants be disturbed?
The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told and communal access is kept open.
Is asbestos a concern with old mastic?
We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Can you send RAMS and CSCS details before starting?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.
How do you choose the sealant?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
How long before the joints can be used?
We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.