Thanks for writing. If your roses are in full sun and good soil, they should go in and out of bloom all summer. If you've had the plants for just a year or two, then you won't have a constant display of flowers all summer --- but as the shrubs grow, they'll produce more blooms so you'll get new shoots blooming as older shoots cycle down.
Cutting back the stems a couple of inches after the floewrs fade can encourage fresh new growth and faster rebloom, as well.
---Justin, Senior Garden Editor, BHG.com