Mastic sealing for building owners and managing agents in Wherwell, Hampshire
Mastic sealing for Wherwell, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Leaks at window and door perimeters
- Draughts at frames across a block
- No planned programme for sealant
Mastic sealing across Wherwell
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How the quote is worked out
To price the job, we consider:
- How accessible the joints are
- The site’s rules and procedures
- Specialist products, such as fire-rated or hygienic sealants
- Whether old sealant has to be cut out first
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.
Before you send an enquiry
Whether it’s one area or a whole building, the same details help:
- What the building is and how it’s used
- Where the site is, with the postcode
- Specification clauses that apply
- The asbestos register, for older buildings
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.
About our mastic sealing in Wherwell
Most buildings come with mastic joints nobody has looked at since handover, and it ages quietly: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. If you have brittle perimeter mastic across a building and repeated reactive repairs to the same buildings, we can put it right, whatever the surface. Looking for mastic applicators who cover Wherwell? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
Around smaller places like Wherwell, older walls fitted with newer windows are a familiar sight. Perimeter mastic there has to grip an uneven face and suit the building’s character.
We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Location
- Wherwell (SP11)
- Region
- Hampshire
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Why deal with it now?
Mixed repairs by different contractors leave a patchwork of products and colours. Resealing a whole building gives a consistent finish. Older rural buildings around Wherwell move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
A quote for mastic joints depends on quantities, condition and access. Call for a quote.
Why clients in Wherwell choose us
- Coloured sealants to suit the setting, where available
- Joints cleaned back to sound surfaces
- CHAS accredited
- Clear, fixed quotes
Take a look at what affects the cost and our accreditations and insurance.
Also near Wherwell
Also in Wherwell
From enquiry to sign-off
On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself usually taking a few days for most blocks, with larger programmes scheduled building by building. Rural sites near Wherwell may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- We inspect the joints, building by building, and record what has failed and why.
- We send a fixed quote that sets out the joints, the products and the programme.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- 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.
- Each building is checked on completion and the work carries our 12-month guarantee.
What we need from you
- Send your site hours and access windows
- Tell us which areas need to stay in use
- Confirm the product named in the specification
Quotes
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, speak to us on 01277 525 020 or email a schedule or drawings.
Advice
Aftercare for building managers
To get the most from the new sealant:
- Ask residents or tenants to report leaks and draughts early
- Plan resealing building by building rather than complaint by complaint
- Include mastic in your cyclical inspections
- Keep bins and bikes away from communal door frames
Protect entrance and corridor joints from knocks where possible. Knocks cause many early failures in communal areas.
Budgets are easier to plan when sealant is part of planned maintenance. We can quote buildings in priority order so spending is spread.
Mastic sealing around Wherwell: what changes locally
Wherwell lies roughly 63 miles out from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres. Wherwell is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first.
For a school such as Wherwell Primary School, perimeter mastic on windows and doors is a holiday job. Buildings close to stations like Andover station, 3.7 miles north-west of Wherwell, are often flats over shops, with frame mastic to keep sound.
Wherwell is about 3 miles south-east of Andover, in Hampshire. We send applicators to Wherwell for mastic joints. 723 places across Hampshire fall within our area, Wherwell among them. Southampton is covered too, some 17 miles away.
Commercial sites across SP11 are covered for mastic joints. Buildings on High Street, Fair Piece and Beech Grove are within our area for mastic joints. We also cover Wherwell Wood (1 mile north-west), Cottonworth (1 mile south-west), Chilbolton (1 mile south), Fullerton (1 mile south-west) and South Harewood (1 mile north-east). Nearby towns on our patch include Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (3 miles north-west), Chandler's Ford (13 miles south), Romsey (12 miles south) and Hyde (9 miles south-east).
Around Wherwell
We work on buildings around White Lion Public House and Longstock Park. Wherwell’s nearest station is Andover station, roughly 3.7 miles north-west of the centre. Well-known places in the area include Andover Museum (3.3 miles north-west) and Andover War Memorial Hospital (4 miles north-west). Open spaces near Wherwell include Mill Lake and Anton Lakes.
Questions about Wherwell
Is a smaller place like Wherwell outside your area?
Not at all. Wherwell is within our area. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Can you quote for a block close to Andover station?
Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.
Is mastic sealing guaranteed?
Our workmanship carries a 12-month guarantee and we hold public liability insurance.
Do you work with property factors and landlords?
Yes. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work, and we quote building by building or as a programme.
Is asbestos a concern with old mastic?
Some mastics in pre-2000 buildings contain asbestos. We ask for the asbestos register or survey before work starts and suspect material is tested first.
Which sealant will you use?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Can you plan resealing across several buildings?
Yes. We survey and price each building, then work through them in order, and the programme can start with the worst.
When to call us in Wherwell
Sunlight and weather break mastic down over time. The surface chalks, the body stiffens and cracks appear, especially on south and west faces.
What tends to prompt an enquiry:
- Cracked, hardened mastic round windows on a block
- Patchy repairs in mismatched sealant
- Estate-wide sealant that is simply worn out
- No planned programme for sealant
Trustees of buildings like Church of St Peter and Holy Cross can bring frame and external mastic into a planned maintenance list.
What your quote should include
- Their plan for phasing and protecting the area
- Whether their applicators hold CSCS cards
- Do they follow the manufacturer’s priming guidance?
- What the guarantee covers, and for how long
What the job involves on each surface
Commercial and mixed-use buildings
Where retail and residential share a building, so phasing has to suit both. Tell us your site hours and access windows and we’ll plan around them.
Estate-wide resealing programmes
Using the same products throughout keeps the estate consistent.