Horizontal Sliding Secondary Glazing

Suitable for most window types

Our most popular option

Horizontal sliders are slim, versatile and easily accessed for cleaning and ventilation. The perfect fit for all property types and styles, offering up to a 65% reduction in heat loss and up to 80% noise reduction.

Suitable for a range of windows such as casement, hinged or any window with vertical bars. Available in a wide range of sizes with a choice of configurations or made to fit your home’s exact requirements and specifications.

Available in two, three, four or five panels, the sashes can be completely removed when you need to clean the existing window. Sashes are fitted with brass rollers for a smooth sliding action.

The Granada difference

Quiet

Secondary glazing offers the most effective sound insulation. Reduces noise by up to 80% and significantly outperforms double glazing.

Warm

Improves thermal insulation of existing single-glazed windows by around 65%, approximately 10% more than double glazing achieves.

Secure

An affordable, discreet, highly effective solution to enhancing security. No external access required, ideal for multi-storey buildings.

Easily accessible but secure

Secondary glazed horizontal sliders allow easy access to primary windows for ventilation and cleaning. Each individual panel can be lifted into the outer frame and swung inwards to facilitate removal. Additional accessories options such as specific locks and handles are available for increased security.

Features & Options of Horizontal Sliding Secondary Glazing

Annoyances solved

Noise, cold, security, condensation issues managed and controlled.

Multiple design options

Historic, contemporary, or unusual designs. 200 frame colours, lift out panels.

Many glazing options

From 4 – 8mm thickness to thermal coatings, all fully customised.

Full advisory service

Helpline for homeowner product, service or installation queries.

Delivery or installation

Local installers trained and accredited by us or home delivered.

10 Year Guarantee

For all frames and glazing. British factory made, engineered to last.

A colour to suit your scheme

Find the perfect match for your Granada window insulation system using our range of over 200 RAL colours. Whether you own a new build, listed property or commercial property, we can fit your requirement.

RAL 1000	RAL 1001	RAL 1002	RAL 1003	RAL 1004	RAL 1005	RAL 1006	RAL 1007
RAL 1011	RAL 1012	RAL 1013	RAL 1014	RAL 1015	RAL 1016	RAL 1017	RAL 1018
RAL 1019	RAL 1020	RAL 1021	RAL 1023	RAL 1024	RAL 1026	RAL 1027	RAL 1028
RAL 1032	RAL 1033	RAL 1034	RAL 1035	RAL 1036	RAL 1037	RAL 2000	RAL 2001
RAL 2002	RAL 2003	RAL 2004	RAL 2005	RAL 2007	RAL 2008	RAL 2009	RAL 2010

RAL 2011	RAL 2012	RAL 2013	RAL 3000	RAL 3001	RAL 3002	RAL 3003	RAL 3004
RAL 3005	RAL 3007	RAL 3009	RAL 3011	RAL 3012	RAL 3013	RAL 3014	RAL 3015
RAL 3016	RAL 3017	RAL 3018	RAL 3020	RAL 3022	RAL 3024	RAL 3026	RAL 3027
RAL 3028	RAL 3031	RAL 3032	RAL 3033	RAL 4001	RAL 4002	RAL 4003	RAL 4004
RAL 4005	RAL 4006	RAL 4007	RAL 4008	RAL 4009	RAL 4010	RAL 4011	RAL 4012

RAL 5000	RAL 5001	RAL 5002	RAL 5003	RAL 5004	RAL 5005	RAL 5007	RAL 5008
RAL 5009	RAL 5010	RAL 5011	RAL 5012	RAL 5013	RAL 5014	RAL 5015	RAL 5017
RAL 5018	RAL 5019	RAL 5020	RAL 5021	RAL 5022	RAL 5023	RAL 5024	RAL 5025
RAL 5026	RAL 6000	RAL 6001	RAL 6002	RAL 6003	RAL 6004	RAL 6005	RAL 6006
RAL 6007	RAL 6008	RAL 6009	RAL 6010	RAL 6011	RAL 6012	RAL 6013	RAL 6014

RAL 6015	RAL 6016	RAL 6017	RAL 6018	RAL 6019	RAL 6020	RAL 6021	RAL 6022
RAL 6024	RAL 6025	RAL 6026	RAL 6027	RAL 6028	RAL 6029	RAL 6032	RAL 6033
RAL 6034	RAL 6035	RAL 6036	RAL 6037	RAL 6038	RAL 7000	RAL 7001	RAL 7002
RAL 7003	RAL 7004	RAL 7005	RAL 7006	RAL 7008	RAL 7009	RAL 7010	RAL 7011
RAL 7012	RAL 7013	RAL 7015	RAL 7016	RAL 7021	RAL 7022	RAL 7023	RAL 7024

RAL 7026	RAL 7030	RAL 7031	RAL 7032	RAL 7033	RAL 7034	RAL 7035	RAL 7036
RAL 7037	RAL 7038	RAL 7039	RAL 7040	RAL 7042	RAL 7043	RAL 7044	RAL 7045
RAL 7046	RAL 7047	RAL 7048	RAL 8000	RAL 8001	RAL 8002	RAL 8003	RAL 8004
RAL 8007	RAL 8008	RAL 8011	RAL 8012	RAL 8014	RAL 8015	RAL 8016	RAL 8017
RAL 8019	RAL 8022	RAL 8023	RAL 8024	RAL 8025	RAL 8028	RAL 8029	RAL 9001