Sometimes shingles need to be replaced due to roof rot or due to the fact that they have broken and become damaged. If they need to be replaced you can take the broken Massachusetts shingle down to the local home repair store and check to see if they have matching shingles. Order a few extra shingles because sometimes a small roof repair will take more than you realize. Once you have the new roofing materials you can go ahead and also purchase putty or nails to help keep put the roof down.
Replace the Massachusetts roof tile by removing the old roof tiles and putting the new ones in the same spot. This will let you make sure that they fit. Then attach the shingles to the roof by either nailing them down or using putty and letting them dry. Doing your own roofing job is not difficult but it can be time consuming making sure that you get it done right. You may want to have a professional check your work after you complete it just so that you can be sure that you did it correctly.