Loft conversion (Mumbles, Swansea)
The structural calculations behind this project, prepared by our engineers for building control.
Project Overview
Location
Mumbles, Swansea
Project Type
Loft conversion
Structural Services
Detailed Calculations
Compliance
Building Regulations
Loft Conversion – Mumbles, Swansea
This dormer loft conversion in Mumbles, Swansea has transformed an underutilised attic space into a bright, functional, and spacious living area. The homeowners wanted to maximise their loft’s potential, adding a new bedroom and en-suite while maintaining the character of the property.
To ensure the conversion was structurally sound, compliant with Building Regulations, and seamlessly integrated into the existing home, PorthouseDean provided expert structural calculations to support the dormer extension, new floor reinforcements, and RSJ beam installations.
Maximising Space & Functionality with Smart Structural Design
This project included:
✅ A dormer extension – Creating additional headroom and usable floor space
✅ Reinforced loft flooring – Supporting the weight of the new living area
✅ RSJ beam & steel support design – Strengthening structural openings
✅ Load-bearing wall modifications – Ensuring seamless integration with the home
What we did
Our contributions included:
✔ Structural calculations for the dormer loft conversion – Ensuring stability and compliance
✔ RSJ beam & steel design – Supporting new structural openings and load distribution
✔ Roof and floor reinforcement – Strengthening the loft to safely accommodate living space
✔ Building Control compliance – Ensuring a smooth approval process
With expert structural engineering in place, this Mumbles home now benefits from a stunning, modern loft conversion, offering additional living space and increased property value.
Thinking About a Loft Conversion? Let’s Make It Happen!
At PorthouseDean, we provide expert structural calculations for loft conversions, RSJ beams, and additional floor extensions.
📍 Providing structural engineering across Swansea, Mumbles, and South Wales.
Why Extend Your Home?
More Space, More Possibilities
Create an open-plan kitchen, a family hub, or a bright entertaining space.
A Date You Can Plan Around
You choose the delivery date, and the price follows the date.
More Natural Light
A wider opening to the garden needs a beam sized for the load above it. The calculations set that size.
Personalised Design
Every house is built differently. The calculations work from your drawings and the structure you already have.
How PorthouseDean Supports Your Project
Every project is different, but the need for precise, reliable structural calculations remains the same. Our engineers work with:
Homeowners
Ensuring designs are safe, cost-effective, and practical.
Architects
Providing calculations that allow for creative yet compliant designs.
Builders
Making sure construction runs smoothly with clear, reliable specifications.
Planning Your Own Project?
More than 9,000 projects since 2012 have run through the same process. You get a fixed price before you commit, and you choose the delivery date.
📩 Get a QuoteStructural Engineering Services We Offer
Structural Calculations for Loft Conversions
Calculations for the floor, beams and roof changes a loft conversion needs.
Structural Calculations for Wall Knock-Throughs
Beam and support calculations for taking out a wall.
Structural Calculations for Extensions & New Builds
Calculations for foundations, walls, beams and roofs on extensions and new builds.
Structural Calculations for Bi-Fold Doors & RSJs
Beam and padstone sizes for wide openings and bi-fold doors.
Structural Drawings & Building Control Calculations
Complete documentation to help you achieve smooth Building Control approvals.