Mastic Sealing in Penton Grafton
Mastic sealing for building owners, managing agents and housing associations in Penton Grafton. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Worn sealant at communal door frames
- Draughts at frames across a block
- Water getting in round frames after rain
Mastic sealing for businesses in Penton Grafton
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Common problems we fix in Penton Grafton
Previous repairs often sealed new mastic over old. New sealant won’t grip failed sealant and the repair soon fails.
Site and facilities staff are often the first to spot these:
- Old repairs sealed over failed mastic
- Complaints coming in block by block
- Damaged joints in communal entrances and corridors
- The same joint failures repeated across a portfolio
For owners of several units at places like Plot 2 Andover Business Park (1 mile south of Penton Grafton), one programme can deal with frame and external mastic across the lot.
What to look for in a quote
- How joint depth will be controlled
- Proof of insurance
- Whether primer will be used where the manufacturer specifies it
- Health and safety accreditation such as CHAS
Mastic sealing in Penton Grafton
Most buildings come with mastic joints nobody has looked at since handover, and it ages quietly: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow along with complaints. We work on communal kitchens and washrooms, window and door perimeters on blocks and shopfronts below residential blocks, and the failures we’re asked to look at most are cracked, hardened mastic round windows on a block and no planned programme for sealant. One point of contact handles commercial sealant work in Penton Grafton from the first photographs to the final walk-round, for single jobs and planned programmes alike.
In and around smaller places like Penton Grafton, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Frame and wall-joint mastic on all of them ages and hardens.
Every job we finish is backed by a 12-month workmanship guarantee, in Penton Grafton as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Location
- Penton Grafton (SP11)
- Region
- Hampshire
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Also near Penton Grafton
Also in Penton Grafton
Why it’s worth doing now in Penton Grafton
Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows and occupiers notice. Older rural buildings around Penton Grafton move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why appoint us
- Over 20 years of commercial sealing
- Our applicators hold CSCS cards
- Matching to RAL references, product permitting
- One phone line for London, the South East and Scotland
Read our cost guide and how we’re accredited.
Should maintenance staff do it?
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. A poor seal in places like these tends to cost more to put right later.
Keeping the joints sound
Cleaning and maintenance staff play a part too. Share these points with them:
- Group repairs into a planned programme
- Log resealing dates block by block
- Prioritise elevations facing the weather
- List the paperwork your organisation requires when you send details
Where a paintable product was specified, it can be painted after curing. Silicone typically can’t be painted, so keep decorators off it.
Budgets are easier to plan when sealant is part of planned maintenance. We can quote buildings in priority order so spending is spread.
Honest limits
Sealant solves a lot, but not everything, and we are upfront when that’s the case. It won’t fix:
- Water coming in from the roof or rainwater goods
- Substrate edges that need repairing first
- Misted or failed double-glazed units
If you are not sure, just give us a call on 01277 525 020 or email us and we’ll give you a straight answer.
What we seal
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- External wall and movement joints
- Communal kitchens and washrooms
- Balcony and threshold joints
Looking after buildings in and around Penton Grafton
At about 65 miles from central London, Penton Grafton is within reach of the capital. Within reach of London, blocks run by agents and associations are common around stations. Penton Grafton is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
Site managers at schools like Harrow Way Community School can fit frame mastic into the summer works. Churches, halls and community buildings such as Holy Trinity Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Penton Grafton is about 2 miles north-west of Andover, in Hampshire. Our applicators travel to Penton Grafton for work on mastic joints, handled exactly as we handle every other area. We work across 723 places in Hampshire. We also cover Southampton, around 22 miles from Penton Grafton.
We take on mastic joints across the SP11 postcode area. If your building is just outside Penton Grafton, we cover Penton Mewsey (1 mile north-east), Penton Corner (1 mile south), Foxcotte (1 mile east), Charlton (1 mile east) and Weyhill (1 mile south-west). Bigger towns within reach include Winchester (15 miles south-east), Hyde (14 miles south-east), Tidworth (6 miles west), Weeke (14 miles south-east), Stanmore (15 miles south-east) and Ludgershall (4 miles north-west).
Local landmarks in Penton Grafton
Locally, jobs take us to sites close to White Hart Public House and the streets around them. Penton Grafton’s nearest station is Andover station, about 1.9 miles south-east of the centre. Other landmarks nearby include Andover Museum (2.6 miles south-east) and Ludgershall Castle (4.6 miles north-west). Open spaces near Penton Grafton include Anton Lakes and Mill Lake.
Common questions from Penton Grafton clients
Is a smaller place like Penton Grafton outside your area?
No. Small places get the same service as large ones. 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.
Will you take on work at estates like Plot 2 Andover Business Park, close to Penton Grafton?
Yes. Our area takes in Penton Grafton and its surroundings, with estates and business parks such as Plot 2 Andover Business Park included. Send details of the unit and the work through our quote form for a quick quote.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Can you seal joints high up on a block?
Access is discussed and agreed before the quote is fixed. Tell us the number of storeys and whether scaffold or other access is planned and we will confirm the approach in the quote.
Who decides which product is used?
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.
Do you supply RAMS and insurance details?
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.
Can you quote from photographs?
It depends on the job. Simple work can often be priced from photographs, while larger or less clear jobs get a site visit first.
How a job runs
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work normally takes a day or two for a single block, longer for an estate programme, and we clear our waste as we work. For a building around Penton Grafton, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- 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.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Before we start on site
- Point out parking and an unloading spot
- Have the specification and drawings to hand
- Let building users know which areas are affected
Get a fixed quote
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call 01277 525 020 or email the details over.