I think the easiest way is to keep the whole fence. Go down to your local Homebase/BnQ select some wood for a few spare uprights, then, if they are too wide, use their free sawmill service to get them to be the right width. Once home, knock out a few exsting uprights (htey are usually nail gunned on) ,and fit as you desire with even spacing. Paint the whole thing and whammo! Yes, paint at night with one sentry either side, a spotlight or night vision goggles, and a simple sign - wet paint. Exterior acrilyic pain dries in a flash anyway
You can buy picket fence pales at timber merchants
That's what I was thinking too. If you take a sample pale with you many will even cut to size for you. Often these things are made up using the offcuts from other work and won't be expensive.
I had a joinery workshop for years, guys were always popping in asking for bits and bobs for home/garden jobs. We always accommodated them, may be you could try a local joiner. Paint the fencing beforehand, that way you only need touch up afterwards.
I've come to despise wood in the garden, and I used to have a picket fence like that, I bashed the whole lot down, removed what I could, and replaced with these... each piece 4 foot long by 3 foot high... so easy to fit a child could do it.. Yes they cost... about £20 each section, plus a bit more for the spikes..
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Once home, knock out a few exsting uprights (htey are usually nail gunned on) ,and fit as you desire with even spacing. Paint the whole thing and whammo!
Yes, paint at night with one sentry either side, a spotlight or night vision goggles, and a simple sign - wet paint.
Exterior acrilyic pain dries in a flash anyway
Yes they cost... about £20 each section, plus a bit more for the spikes..