Mastic sealing for building owners and managing agents in Crondall, Hampshire
We carry out mastic sealing for building owners, managing agents and housing associations in Crondall and the surrounding area. Send photographs or drawings for a fixed quote.
- Mastic failing across several blocks on an estate
- Water getting in round frames after rain
- A mix of products and colours from past repairs
Mastic sealing in Crondall
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing in Crondall
Before work starts, most agents and landlords want the documents in order. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are a Constructionline member and CHAS accredited, and we carry public liability insurance. The enquiries we see most involve damaged joints in communal entrances and corridors and water getting in round frames after rain, on window and door perimeters on blocks, balcony and threshold joints and communal kitchens and washrooms. Most enquiries from Crondall start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Owners and agents with buildings around smaller places such as Crondall tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.
Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Crondall (GU10)
- Region
- Hampshire
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
What we’re called out for in Crondall
Previous repairs often sealed new mastic over old. New silicone has nothing to grip on old silicone, so these repairs rarely last.
Site and facilities staff are often the first to spot these:
- Open joints in brickwork or panels
- Damp patches beside frames
- Damaged joints in communal entrances and corridors
- Estate-wide sealant that is simply worn out
Student blocks close to universities like University for the Creative Arts (2.6 miles south-east of Crondall) are easiest to work on between tenancies.
Questions to ask before you book
- What site paperwork they can supply
- Who will actually carry out the work
- What level of public liability insurance do they hold?
- The terms of the workmanship guarantee
Should maintenance staff do it?
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Why act early in Crondall
Failed perimeter mastic lets cold air in around frames and the windows typically get the blame. In many cases, new perimeter sealant deals with it where the frames themselves are sound. Older rural buildings around Crondall move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
A quote for mastic joints depends on how many there are, their condition and the access, plus any specification you are working to. Call for a quote.
Why choose Mastic Doctor in Crondall
- Failed material removed, not covered up
- Health and safety: CHAS accredited
- Clear, fixed quotes
- RAL and finish matching where the product range allows
Read our cost guide and our accreditations.
Nearby places to Crondall
More services for Crondall
Mastic sealing around Crondall: what changes locally
Crondall sits in one of the drier corners of the country, the South East. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first. Crondall is about 38 miles from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres; their frame mastic often ages block-wide.
For owners of several units at places like Fleet Business Park (2.2 miles north-east of Crondall), one programme can deal with frame and external mastic across the lot. Site managers at schools like Crondall Primary School can fit frame mastic into the summer works.
Crondall is about 3 miles south of Fleet, in Hampshire. We cover Crondall and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 723 places across Hampshire fall within our area, Crondall among them. For work in that direction, see our Reading page, about 16 miles away.
Business premises anywhere in GU10 are within our area for mastic joints. Buildings on Church Street, The Borough and Glebe Road are within our area. If your building is just outside Crondall, we cover Redlands (1 mile north-east), Bowling Alley (1 mile north), Dora's Green (1 mile east), Warren Corner (1 mile east) and Mill Lane (1 mile north). A short drive away, we cover Basingstoke (11 miles west), Farnborough (6 miles north-east), Fleet (3 miles north), Aldershot (4 miles east), Alton (8 miles south-west) and Yateley (7 miles north).
What’s near Crondall
In Crondall, that means premises near The Plume Of Feathers Public House and St Nicholas' School, among other places. The closest station to Crondall is Farnham station, about 3.3 miles south-east. Well-known places in the area include Powderham Castle (1.2 miles south) and Fleet Community Hospital (3.8 miles north). Green spaces nearby include Beacon Hill and Farnham Park.
For managing agents and facilities managers
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
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.
FAQs: Crondall
Can work in a care setting near Crondall go ahead while residents are there?
Yes. We work around residents’ routines, a room or two at a time. Noise and disruption are kept to a minimum.
We manage a building near Farnham station. Can you help?
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.
How do you reach windows on upper floors?
We talk through access for each building when we quote. Tell us the number of storeys and whether scaffold or other access is planned and we will confirm the approach in the quote.
Do you work for managing agents and housing associations?
We do. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work and work can be quoted per building or as a whole.
How do you choose the sealant?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
What guarantee do you give on resealing?
A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.
Maintenance after handover
After handover, these steps help:
- Track which buildings were done and when
- Have the asbestos survey to hand for older buildings
- Look at the sunniest and most exposed elevations first
- Reduce knocks to communal area joints
Add mastic joints to your cyclical inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away and record where they are.
Mastic fails gradually, then all at once in a wet spell. Resealing when cracking first shows avoids water damage and the complaints that come with it.
Diagnose, treat, sign off
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. Jobs in and around smaller places like Crondall are usually planned as a single visit, so photographs and measurements up front really help. Then the right materials arrive with us.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
What we need from you
- Tell us which areas need to stay in use
- Send asbestos survey details if the building is pre-2000
- Share your working hours and any access restrictions
Request a quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.