do you mean grout sealer? see below

http://www.homedepot.com/p/Miracle-Sealants-15-oz-511-Spray-on-Grout-Sealer-GRT-SLR-AERO-SG/100672935

所有跟帖： 

• 哦，谢谢您 -heli2389- ♂ (0 bytes) () 05/02/2017 postreply 19:17:44

• 他指的不是grout，是一种化学涂层，Polyurethanes -老农民说两句- ♂ (0 bytes) () 05/02/2017 postreply 19:27:52

• 指铺TILES之间不是有接缝吗，那个缝容易黑脏，接缝覆盖上什么可防灰尘防污？ -heli2389- ♂ (0 bytes) () 05/02/2017 postreply 20:10:03

• Use the above suggested grout sealer. Polyurethane is one of the -hhtt- ♂ (350 bytes) () 05/02/2017 postreply 20:46:26

• 谢谢。 -heli2389- ♂ (0 bytes) () 05/03/2017 postreply 07:05:18