RAPTOR ROOFING & CONSTRUCTION LTD
Need an extra bedroom, a quiet study or more storage? Tell us what you want from the new room and we’ll explain which conversion type suits your roof geometry, what a measured site check looks for, and the practical next step to get a clear written scope and a costed estimate.
AN INTRODUCTION / 05
Unused or under-used lofts can add comfortable living space without changing your garden or the house footprint.
Start by deciding how you intend to use the new room and how much headroom and light you need. We’ll survey the loft and roof to check access, standing height and structural capacity, then explain whether rooflights, a dormer, hip-to-gable or mansard is realistic and what information we need to produce a written scope and estimate.
EXPLORE THE OPTIONSOUR SERVICES / 05
Choosing a conversion type means trading disruption, cost and usable area. We’ll check headroom, roof shape and access, then recommend the style that meets your priorities — more light, extra floor area or minimal roof work — while explaining the regulatory checks and on-site practicalities you should expect.
To gain increased headroom and genuinely usable floor space, a dormer adds a vertical-faced extension to the roof. We measure where the dormer will tie into rafters and gutters, carry out required structural alterations and make sure new flashings and windows are weatherproof. After structural work we complete insulation, plastering and joinery so the room is ready for sleeping, working or storage.
ENQUIRE ABOUT THIS SERVICEHaving reasonable headroom but needing more daylight and ventilation? Installing rooflights is the least intrusive option. We position windows to maximise light without weakening rafters, upgrade insulation and ensure correct condensation control and ventilation, keeping the roof weatherproof while finishing the interior.
ENQUIRE ABOUT THIS SERVICEA sloping hip can be converted into a gable wall to widen the loft footprint. We inspect load paths and junctions with existing masonry, install any necessary steels or supports, and tie the new gable into the roof covering and drainage. Once the structure is secure we weatherproof junctions, fit windows and complete insulation and internal finishes.
ENQUIRE ABOUT THIS SERVICEMaximising internal volume often calls for a mansard, which reprofiles the roof to create near-vertical walls and generous headroom. We assess where new supporting structure is needed, rework roof junctions and install appropriate insulation, ventilation and guttering changes. Mansard conversions are substantial structural work, so we coordinate the roofing and internal trades to deliver a watertight, habitable room.
ENQUIRE ABOUT THIS SERVICEOUR PROCESS / FOUR STAGES
Exploring a conversion follows a practical route from a measured site check through structural decisions, on-site building work and final finishing. We set out what is required at each stage, who supplies the drawings and structural inputs, and how we coordinate roofing and internal trades so the build is manageable.
Begin with a measured survey to confirm headroom, roof slope, access and joist condition. We take measurements and photos, note party walls and chimneys, and identify where strengthening might be needed so we can advise whether rooflights, a dormer, hip-to-gable or mansard is realistic and costed for your property.
When a survey shows conversion is feasible we produce a scope that sets out required structural work, insulation, ventilation and escape routes. We identify the drawings and structural calculations needed for building control and whether planning or Party Wall notices may be required, and explain which documents we can prepare or work from.
Where strengthening is needed we install beams or reinforce joists and form a safe stair before altering roof planes for dormers or mansards. We sequence roofing work to maintain weatherproofing, use temporary coverings where necessary and ensure flashing details around new openings are completed as the structure is formed, reducing the risk of water ingress during the build.
After structural and roofing phases, internal work follows: insulation, plastering, flooring, joinery and installation of electrics and heating. We complete rooflight and dormer seals, tidy roof junctions and hand over written notes on what was installed and how to inspect seals and gutters so you know which items to check periodically after the project finishes.
WHY CHOOSE RAPTOR / WHAT MATTERS
Want extra living space without extending outwards? A loft conversion uses your existing footprint to add bedrooms, a workspace or valuable storage, with choices that balance space against structural implications and the level of disruption you find acceptable.
When you want genuine additional floor space rather than just more light, dormer, hip-to-gable and mansard conversions create usable rooms you can furnish. We plan layouts to avoid awkward eaves, carry out necessary roof alterations and finish internal works so the room is ready to use at handover.
A dark or stuffy loft transforms quickly with well-placed rooflights or larger dormer windows. We position openings to increase daylight while addressing ventilation and condensation through correct insulation details and trickle vents so the new room remains comfortable and functional year-round.
When roof alterations are needed, combining structural work with the roofing and insulation phase avoids unnecessary junction issues. We coordinate roof coverings, flashings and any repairs to weak junctions so new windows and altered roof planes are made weatherproof and thermally efficient before internal finishes begin.
INSIGHT / Loft Conversion Guidance
Deciding between more light, extra floor area or minimal disruption? These notes will help you match the conversion to your roof and budget so you can make a practical choice.
Two practical checks decide whether your loft can become a room: standing headroom and usable floor depth. We measure the highest headroom and the depth where someone can stand upright; both determine whether a simple rooflight installation will do, or whether you need a dormer or a larger re-profile. We also inspect rafters and joists for decay or previous repairs because rotten or undersized timbers change the scope. A dormer or mansard adds volume but imposes new loads that may require beams or steelwork, while a hip-to-gable alters external wall lines and needs careful tie-ins with masonry. Sending clear photos of the loft layout, roof slope and internal access speeds up the feasibility conversation before a measured visit.
Structural safety demands a measured approach to beams, joists and stair position. We look for load-bearing walls that can take new point loads and check whether steels are required to transfer roof loads safely. Stair location impacts downstairs floor plans and escape routes, so we recommend placing the stair where it least disrupts existing rooms while meeting building regulations for rise and going. Insulation, ventilation and fire separation are items the inspector will check, so we set them out in the project scope. Planning permission becomes likely where the external appearance changes significantly or where property controls apply; we explain when planning may be needed and what supporting drawings help a submission, while noting that the local authority issues approvals.
Budget and disruption should guide the trade-offs between types: rooflights are the least disruptive and concentrate spend on windows and insulation; dormers offer a balance of space and cost; hip-to-gable and mansard conversions deliver the most area but require substantial structural work. Hidden issues — older timbers, changed gutter runs or the need to reroute services — are common cost drivers, so we itemise likely contingencies in written estimates. Think about how you’ll use the room: a bedroom needs soundproofing and compliant means of escape, while a study may prioritise light, sockets and heating. We help you prioritise spending so the finished space meets daily use without surprises.
AREAS WE SERVE
In Hoddesdon or the surrounding towns listed on our website, send photos and your postcode to start. We’ll confirm whether a measured survey is needed, check roof structure and access, and arrange a site visit so you receive a clear written scope and a cost breakdown for the roofing and construction phases.
DISCUSS YOUR LOCATIONSTART THE CONVERSATION
Send us a few photographs and your postcode using the form, or give us a call. We will come back to you, arrange a survey where one is needed, and set out in writing what we recommend and why before any work is agreed.
QUESTIONS / LOFT CONVERSIONS
Comparing options? These answers focus on practical risks, structural checks and the pieces of information we’ll need from you to progress from enquiry to a written scope.
ASK ANOTHER QUESTIONStanding headroom is the key measurement for feasibility. During a measured survey we record maximum headroom and the usable standing depth; if headroom is limited, we’ll show whether rooflights will help or whether a dormer, hip-to-gable or mansard is required to create the vertical space you need.
Not always. Many loft changes fall within permitted development, but planning is more likely if the external appearance changes significantly, the property is in a controlled area, or size limits are exceeded. We’ll advise when planning looks probable and what drawings help a submission, but the local planning authority issues any consent and you should allow time for their decision.
For an initial view, photos of the loft, roof slope and access plus your postcode help. A measured survey then records joist and rafter sizes, chimney and party wall positions and load-bearing wall locations. Those details show whether new beams or steels are needed and allow us to produce a clear written scope and cost breakdown for the structural and roofing work.
Work that touches a shared wall may trigger Party Wall etc. Act 1996 procedures. We’ll tell you if your chosen conversion affects a party wall and outline the notices or reports that should be arranged early so neighbour concerns are handled before building begins; clear communication and documented arrangements reduce the risk of delay.
After completion, check dormer flashings, rooflight seals and altered gutter runs periodically for signs of water ingress or blockages. We hand over a basic checklist of items to inspect and explain how to spot early signs of wear so small issues don’t become bigger problems. Regular gutter clearing and an occasional roofline inspection keep junctions watertight.
Already have drawings or engineer calculations? We’ll work from those documents and coordinate the roofing and structural installations on site. If you don’t have them, we’ll explain what information is needed and work alongside the professionals you appoint so the build meets the required checks and the roofing and internal trades are integrated.
