Once you have detected a pinhole leak in your copper pipe, and it is above the slab thus it is not that difficult to repair.

Isolate the leak, and turn off the water supply to the house, the supply can be either at the valve where it comes in or at the water meter located at the street. If you turn it off at the house then open the hose bib that is usually located just above the water shut off. This will relieve any pressure from the internal pipes, and the leak should stop dripping now.

Subsequently, you need to get some parts to stop the leak. You would need small piece of soft rubber and a pipe clamp, if it is a pinhole leak. Try to find a clamp that is close to the size of the pipe. You can usually locate this type of clamp in a hardware shop or auto parts store. Make sure the rubber is soft so it will close the leak when you tighten the clamp.

Do not over tighten the clamp or you may crush the pipe and result in a bigger leak. Place the rubber over the hole and lock the clamp. After it is tighten, turn on the water and check the leak. If it has stopped dripping then you are done. Otherwise, you have to tighten the clamp slowly until the leak stops. Again, do not over tighten the clamp. Hopefully this will be the last leak you will have, but chances are it will not be.

Repair a leak or broken pipe is not as difficult as you think, as long as you follow these easy steps, you are able to get rid of the overcharge piping plumber. Here are the 8 simple steps for pipe repair:

1. First, isolate the place where the drain pipe is leaking. Usually where the water is leaking out from the drain pipe is not the source of the leak, it may take a little more time to do the pipe digging if it is necessary. Once the pipe leak is isolated, turn off the main water pipe supply to that line. Make sure the correct diameter repair pipe and couplers is in place, PVC pipe often has always information shown about size and test-strength on the pipe.

2. Leave a reasonable work space around the break drain pipe to allow movement in the PVC pipe in order to achieve a tight fit with the drain pipe repair. Clean out the water, mud and dirt left in the drain pipe and screw the pipe tight. With a PVC pipe cutter, cut an approximately 4 to 6 inches from break on each side of the drain pipe, and make sure to clean the pipe in both ends clear of any mud. During the cutting of the drain pipe, in case the pipe found start to crack, place a small amount of PVC primer to the spot where the blade touches the drain pipe and let it sit for a moment before applying pressure to the PVC pipe cutter. This will allow the pipe softer and make the drain pipe easier to cut without cracking.

3. By using the purple primer and the brush that comes with it, prime both of the clean pipes ends approximately 1 inch down from the pipe lip end, and the insides of two straight pipe couplers. Apply a thin layer of glue to one end of the drain pipe and half of a straight pipe coupler. If the blue glue is being used, you have only about 20 seconds to fit the pipe couplers onto the drain pipe ends, if clear glue is being used, the drying time is much more faster. Twist coupler down hard onto the drain pipe, there is a “stop” in the centre of the pipe coupler, you want the pipe end to butt up against that.

4. Cut a piece of the repair pipe to fit the length of the cut you made in the sprinkler line, including the half inch or more of each straight pipe coupler. Measure from the middle of each straight drain pipe coupler to achieve the desired length.

5. Fit the cut piece of the repair pipe into the couplers dry, make sure that the fitting is correct also the resulting pipe is not bowed, from the replacement piece being too long.

6. Disassemble the repair pipe and make any necessary adjustments on the pipe, until the resulting fitting on the drain pipe is perfect.

7. Prime both ends of your pipe cut piece, wait for few seconds, and apply a light layer of glue to one end of the replacement piece and inside one of the straight pipe couplers. Twist the pipe hard into the coupler until the end. Wait at least a minute for that to dry then apply glue to the remaining pipe-end and coupler. With the final fitting, pull hard on the sprinkler-line pipe, upside down, in order to get the replacement pipe to slip into the pipe coupler. Allow all pipe fittings and pipe joints to dry completely before turning water back on to the pipe line, the drying time would take up to 5 minutes.

8. Observe the area of the repaired drain pipe for a few minutes before the pipe hole is covered.