Construction Mastic in Wherwell Wood
Mastic packages for new-build and refurbishment projects across Wherwell Wood, by CSCS-carded applicators. CHAS accredited and fully insured.
- Mastic snags holding up handover
- A mastic package split between trades with no clear owner
- Failed sealant in an existing building being refurbished
Construction mastic for Wherwell Wood sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When to bring in a specialist
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Construction mastic in Wherwell Wood
External mastic depends on the weather in a way most internal trades don’t. Cold or damp mornings, frost and condensation on frames can all hold external sealing up. Internal sealing often fills those days. Site teams most often ask us about new external sealant already peeling away and sanitary sealant damaged by following trades, across cladding and panel joints, floor and skirting junctions and brick and block movement joints. One point of contact handles commercial sealant work in Wherwell Wood from the first photographs to the final walk-round, for single jobs and planned programmes alike.
In the countryside around places like Wherwell Wood, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Wherwell Wood (SP11)
- Wider area
- Hampshire
- Guarantee
- A 12-month guarantee
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Also near Wherwell Wood
Also in Wherwell Wood
Common problems we fix in Wherwell Wood
Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A general-purpose silicone on a facade or a caulk in a wet area won’t perform like the specified product. We stick to the specified product, or put any alternative to you first.
Typical triggers for a call:
- Oversized or tapered gaps around new frames
- Cracks opening in caulked internal joints
- A mastic package split between trades with no clear owner
- Missed perimeter joints on a new elevation
When a school such as Wherwell Primary School is extended or refurbished, the mastic package is often squeezed into the holidays.
Comparing quotes
- What the guarantee covers, and for how long
- The named product and why it was chosen
- Proof of insurance
- How the existing material will be dealt with
Construction mastic in Wherwell Wood: the local picture
Wherwell Wood sits in one of the drier corners of the country, the South East. Winter mornings still bring frost and condensation on frames and panels, so external mastic is timed for workable conditions and agreed with the site manager. Wherwell Wood is about 63 miles from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and main contractors there need mastic that keeps to the programme.
For contractors at a college like Andover College (2.7 miles north of Wherwell Wood), perimeters and internal sealant are timed for the holidays. Extensions at sites like Andover War Memorial Hospital (to the north-west of Wherwell Wood) typically sit beside working departments, and the mastic follows strict access rules.
Wherwell Wood is about 3 miles south-east of Andover, in Hampshire. Commercial clients in Wherwell Wood can call on us for mastic packages, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, Wherwell Wood among them. There’s a separate page for Southampton, about 18 miles away.
Postcode districts covered here: SP11. Sites close to Wherwell Wood are covered too, including Wherwell (1 mile south-east), Goodworth Clatford (1 mile west), Cottonworth (1 mile south), Fullerton (2 miles south) and Chilbolton (2 miles south-east). A short drive away, we cover Winchester (10 miles south-east), Eastleigh (15 miles south), Andover (3 miles north-west), Chandler's Ford (13 miles south), Romsey (13 miles south) and Hyde (10 miles south-east).
Near you in Wherwell Wood
In Wherwell Wood, that means premises near White Lion Public House and Winton Community Academy and the streets around them. Wherwell Wood’s nearest station is Andover station, about 2.9 miles north-west of the centre. Well-known places in the area include Andover War Memorial Hospital (3.2 miles north-west) and Andover Museum (2.6 miles north). The countryside around Wherwell Wood includes Mill Lake and Anton Lakes.
On site: what to expect
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes a day or two on a small fit-out and several weeks on a large multi-storey package, and we clear our waste as we work. For work around Wherwell Wood, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- We agree with the site team which areas come first.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
What we need from you
- For older buildings, check the asbestos register before work
- Let building users know which areas are affected
- Share your working hours and any access restrictions
Get a fixed quote
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Related advice
What the job involves on each surface
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move, and we use a flexible sealant where there’s movement.
Common questions from Wherwell Wood clients
Can you take on a job at a hospital such as Andover War Memorial Hospital?
Yes. Healthcare sites are among the places we work. We follow the site’s permits, sign-in and infection-control procedures in every area.
Do you cover business parks and estates near Wherwell Wood, such as Harewood Forest Industrial Estate?
Yes. We cover Wherwell Wood and the area around it, including industrial estates, business parks and retail parks such as Harewood Forest Industrial Estate. Send details of the unit and the work through our quote form for a quick quote.
How long before the joints can be used?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.
Do you guarantee new-build sealant work?
Each package is signed off with a 12-month workmanship guarantee. Damage by others after we’ve finished isn’t covered.
Can you quote from photos?
That depends on the size and complexity of the job. Straightforward work can often be priced from photos and measurements, and bigger or more complex jobs normally get a visit.
How long does a typical visit take?
It depends on the scope, but the work typically takes whatever the programme allows, since the work follows the trades as areas are released. For bigger or phased jobs, we will set out a timescale with the quote.
Can you come in just for snagging?
Yes. Share the list and photos, and a fixed quote follows.
Owners, agents and contractors
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.
What sets the cost
We price every job individually. The things that drive the figure:
- Joint width, depth and condition
- Working within restricted access windows
- The total length or number of joints
- Site requirements such as inductions and permits
What a job costs comes down to the quantity of joints, what has to come out first and the access. Call for a quote when you’re ready.
What we need to price the job
A few photos plus some basic facts will normally do. Please tell us:
- Approximate linear metres or a joint schedule
- When you need the work done
- Asbestos survey details if the building is older
- Any specification or named product
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. For smaller jobs, photos and a description will do.