Pick Your Day Delivery

UK Manufactured

10-Year Guarantee

Customer Satisfaction

Installations

Blog / How to guides

How to build a Log Cabin

13 March 2021

A day is all it takes for two DIY-savvy people to build a log cabin.

Read our step-by-step guide to building a 4m x 3m Waltons Home Office Executive log cabin, watch the video of tutorial, and apply the same lessons to your build.

  1. Prepare your ground
  2. Lay the bearers and base logs
  3. Fit the wall logs, windows, and door frames
  4. Install roof joists
  5. Add decking and roof boards
  6. Lay the floorboards
  7. Hang the door
  8. Fit storm braces
  9. Lay roof felt and add finishing boards

You'll need:

  • Rubber mallet
  • Hammer
  • Tape measure
  • Spirit level
  • Saw
  • Electric drill
  • Screwdriver
  • Wrench
  • Ladder

Prepare your ground

a stable base for the log cabin
A sturdy, level base is key to building a stable garden building.

Ensure your base is firm and level. For a log cabin, we recommend either a solid concrete base, or concrete slabs, laid to the dimensions of the building. We recommend that a gap of two feet is left all the way around the edge of the base so that you have easy access when you come to treat the timber with wood preservative.

Lay your floor bearers out and evenly space them across the base. It's best to do this on a dry day, but if there is a bit of rain about, then use PVC covering on the bearers to prevent moisture rising up into the floor.

Lay the bearers and base logs

bearers for the log cabin square on the floor
Ensure your bearers are square before laying your base logs on top

Once the bearers are down, lay the initial base logs across them, ensuring that all angles are square.

Secure the base logs to the bearers with screws to prevent movement of the building.

Fit the wall logs, windows and door frame

person hitting wooden logs into the tongue and groove slots
Use your mallet to tap the wall logs into their tongue and groove slots

Gently, but firmly, tap the logs together at the joints using the rubber mallet. Make sure they're tightly secured in the tongue and groove along the length of the logs.

Once the walls are built up to about a third of the way up the window gaps, slot the windows in. Press down firmly at the top to ensure there are no gaps around the bottom edge.

If you find the window kit hard to slot in, loosen some of the screws slightly around the frame, then re-tighten when the window is in place.

Continue to build up the wall logs to the height of the door framework. The door frame pieces are to be slotted into the bottom, sides and top of the frame, and tapped securely into place with the rubber mallet. Finish building up the wall logs.

Install roof joists

person installing roof joints for the log cabin
Roof joints run the entire length of your cabin

When the wall is successfully built up, install the roof joists. Tap these into the upright channels at the top of the walls. The joists run from one side of the building to the other.

Add decking and roof boards

person working on the roof board and decking
Ensure the initial roof board is secured to the support beams with the groove facing out

You can now start to work on the decking. Use the pressure treated boards provided. Use a board as a spacer to create even gaps. Screw the boards to the bearers to secure.

Install the exterior support beam onto the corner of the decking. This will support the overhanging roof beam. You may need to trim this to fit with your saw as it's not pre-cut. Secure with appropriate screws.

When you start on the roof, place the initial board on the beams with the groove facing away from the building. Line up to the end of the roof joists, and secure to all the roof beams.

Lock the boards into place, making sure they're flush at each edge, and that the tongue and groove is properly in place all the way along the board. Nail them to the roof beams to secure.

When you install the final roof board, you may find that it overhangs the joist. Trim to be level with the end of the roof support beam. Don't worry about rough-looking edges; roofing felt and fascia board will cover them.

Lay the floorboards

person hammering the floor boards and pushing them together
Ensure your floor boards are pushed together firmly before securing with nails

Secure the initial board against the cabin wall with the groove facing outwards, and nail into place. On each subsequent board, hammer in the nails at an angle to make sure the boards are pushed together firmly, with the groove of the next board covering the nail.

It may be necessary to measure and cut sections of the floorboards to allow for the internal angles of the wall logs.

Measure the internal dimensions of the cabin, and cut the finishing strips to size.

Secure these around the edge of the floor to neaten any rough edges, and give a better looking floor.

Hang the door

person hanging the door and door hinges in place
Slot your door hinges into place

Simply line up the barrels of the door hinges with those on the door frame, and slot into place. Once closed, the door edges are covered by the framework, so they can't be removed from the outside.

Fit storm braces

fixing the storm braces to the log cabin
Storm braces are fixed in place with bolts that secured on the other side of the wall

These give extra support to the building during high winds. Affix to the walls inside the cabin at the top and bottom of the brace by drilling through the wall log, and securing with a nut and bolt.

Lay roof felt and add finishing boards

person fixing the facias and finial to the log cabin as a finishing touch
Pre-drill any holes before securing your facia board to the edge of the building

Roll out your felt and cut enough to cover the length of the roof. Leave an overhang of two inches either end.

For this building, you'll need five strips.

Lay the felt either side of the apex, nailing down at two inch intervals. Overlap each strip by at least an inch to prevent water creeping in. Lay the strip to cover the apex last.

Fold the overhang over the edge of the roof and secure to the roof beams.

Use the fascia boards to lever the roof felt down, and screw to the roof beams. Drill pilot holes to prevent the wood splitting.

Secure the felt to the front and back of the roof with evenly-spaced tacks to give a more professional finish.

Your log cabin is now ready for you to turn into your ideal workshop, man-cave, restful retreat or any space you choose! Have a look at the video below for a slightly more in-depth look at the process.

Share:

You may also like

How to install fence panels
How to damp proof your shed
6 ways to spruce up your rented garden

Must Read

10 genius ways to organise your shed
10 genius ways to organise your shed
10 clever ways to organise a greenhouse
10 clever ways to organise a greenhouse
7 garden laws you never knew about
7 garden laws you never knew about
How to build a Log Cabin
How to build a Log Cabin
How to turn your shed into a workshop
How to turn your shed into a workshop
WIN a Waltons Log Cabin worth £4,049
WIN a Waltons Log Cabin worth £4,049
Waltons ultimate shed maintenance guide
Waltons ultimate shed maintenance guide
WIN a Waltons Mini Greenhouse
WIN a Waltons Mini Greenhouse
Waltons' ultimate guide to buying a shed
Waltons' ultimate guide to buying a shed
How to pick the best shed for your allotment
How to pick the best shed for your allotment
Tips for playhouse maintenance
Tips for playhouse maintenance
How to create the best garden room office
How to create the best garden room office
Keep kids entertained in the garden this summer!
Keep kids entertained in the garden this summer!
Waltons ultimate guide to buying fence panels
Waltons ultimate guide to buying fence panels
Greenhouses for the larger garden
Greenhouses for the larger garden
Why you need a garden office
Why you need a garden office
Customer Story - Amy's Insulated Garden Room
Customer Story - Amy's Insulated Garden Room
Your favourite tools
Your favourite tools
Ten favourite facts about sheds
Ten favourite facts about sheds
Working from home in your own garden office: your questions answered
Working from home in your own garden office: your questions answered
How to get your playhouse summer ready
How to get your playhouse summer ready
Top tips for eco-friendly living
Top tips for eco-friendly living
Six popular childrens' playhouses
Six popular childrens' playhouses
The ultimate guide to preparing and maintaining your shed for winter
The ultimate guide to preparing and maintaining your shed for winter
How to get the most from your playhouse
How to get the most from your playhouse
Professional interior designers show us their garden offices
Professional interior designers show us their garden offices
Customer Story - Karen's Insulated Garden Room
Customer Story - Karen's Insulated Garden Room
Messy shed competition winner!
Messy shed competition winner!

Follow us

Send us your Shed Images

Send us your image

Categories

Ideas and Inspiration Garden Shed Guides and Ideas Summerhouse Guides and Ideas Playhouse Guides and Ideas Log Cabin Guides and Ideas Greenhouses Competitions Pets and sheds Customer Stories Garden Tips Interviews Press Halloween Stuff Buying Guides Shed Conversion Guides Blogs we love How to guides Working at home Insulated Garden Rooms

Join our email club to receive exclusive offers and discounts. Simply enter your email address and click Join.

Contact Us

Open: Mon-Fri: 8:30am - 5pm

Phone: 0800 029 1000*

Email: websales@waltons.co.uk