If I need to join two pieces of wood to make the overall length of a
pergola longer than each individual piece of wood , would a half lap
join be the correct method ?

If so how do i stop water getting in between the joints ?

In addition would coach bolts be a recommended method to ensure the
horizontal pieces did not move from the vertical posts?

Thanks
Andrew

--
To reply via email, first reverse the address below then replace the
(at) with @ and the (dot) with . moc(tod)xepip(tod)lsd(ta)spuorgswen_werdna

On Fri, 01 Apr 2005 19:00:44 +0100, Andrew Welham
wrote:


If I need to join two pieces of wood to make the overall length of a
pergola longer than each individual piece of wood , would a half lap
join be the correct method ?

If so how do i stop water getting in between the joints ?

In addition would coach bolts be a recommended method to ensure the
horizontal pieces did not move from the vertical posts?

Thanks
Andrew

This joint will not be as strong as unjoined single bit. I buy floor
joists for this type of activity, most builders merchants deliver.

Rick

"Rick" wrote in message
...
On Fri, 01 Apr 2005 19:00:44 +0100, Andrew Welham
wrote:


If I need to join two pieces of wood to make the overall length of a
pergola longer than each individual piece of wood , would a half lap
join be the correct method ?

If so how do i stop water getting in between the joints ?

In addition would coach bolts be a recommended method to ensure the
horizontal pieces did not move from the vertical posts?

If you have to join two beams, try this method:-

Cut horizontally along the centre of one of the beam ends, for about a foot.
Now cut down from the top of that beam at an angle of 45 degrees until
you intercept your initial lengthwise cut - make sure you cut at the correct
sort of 45 degrees, i.e. so you end up with an internal angle of wood.
Slice the , oh stuff it, I'll try some ascii art, it never works but here
goes.

---------------------/
/
/-------------------/
/
-----------------------------------/

Cut one beam as shown, ( side view shown ) then the other to fit this
exactly.
Make the cuts at 45 degrees, the angles shown above are all I can get with
ascii art.
You could stick a couple of long screws through the joins, along with
waterproof
exterior glue to add stregth.

Andy.

andrewpreece wrote:

Slice the , oh stuff it, I'll try some ascii art, it never works but here
goes.

---------------------/
/
/-------------------/
/
-----------------------------------/


Hmm, let me fix that for you
(monospaced font and no tabs is the trick) ;-)

-------------------/
/
/-------------------/
/
-----------------------------------/

AKA a scarf joint... another version (cuts would be smooth and not
stepped in real life!)
A B
// //
------------------- -----------------------------
/ /___
---___ ---___
---___ ---
/ /
-----------------------------/ /------------------
// //
// //
// //
A B

Bolts right through at A and B (countersink the heads flush if you
want), waterproof wood glue in the joint first.



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/